20715721880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{769}}^1$

素因数の和:946

約数の個数: 256

約数和(自身を含む): 57480192000

約数和(自身を除く): 36764470120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 47, 56, 70, 89, 92, 94, 115, 140, 161, 178, 184, 188, 230, 235, 280, 322, 329, 356, 376, 445, 460, 470, 623, 644, 658, 712, 769, 805, 890, 920, 940, 1081, 1246, 1288, 1316, 1538, 1610, 1645, 1780, 1880, 2047, 2162, 2492, 2632, 3076, 3115, 3220, 3290, 3560, 3845, 4094, 4183, 4324, 4984, 5383, 5405, 6152, 6230, 6440, 6580, 7567, 7690, 8188, 8366, 8648, 10235, 10766, 10810, 12460, 13160, 14329, 15134, 15380, 16376, 16732, 17687, 20470, 20915, 21532, 21620, 24920, 26915, 28658, 29281, 30268, 30760, 33464, 35374, 36143, 37835, 40940, 41830, 43064, 43240, 53830, 57316, 58562, 60536, 68441, 70748, 71645, 72286, 75670, 81880, 83660, 88435, 96209, 107660, 114632, 117124, 123809, 136882, 141496, 143290, 144572, 146405, 151340, 167320, 176870, 180715, 192418, 215320, 234248, 247618, 253001, 273764, 286580, 289144, 292810, 302680, 342205, 353740, 361430, 384836, 479087, 481045, 495236, 506002, 547528, 573160, 585620, 619045, 673463, 684410, 707480, 722860, 769672, 831289, 958174, 962090, 990472, 1012004, 1171240, 1238090, 1265005, 1346926, 1368820, 1445720, 1574143, 1662578, 1916348, 1924180, 2024008, 2395435, 2476180, 2530010, 2693852, 2737640, 3148286, 3216727, 3325156, 3367315, 3832696, 3848360, 4156445, 4790870, 4952360, 5060020, 5387704, 5819023, 6296572, 6433454, 6650312, 6734630, 7870715, 8312890, 9581740, 10120040, 11019001, 11638046, 12593144, 12866908, 13469260, 15741430, 16083635, 16625780, 19163480, 22038002, 22517089, 23276092, 25733816, 26938520, 29095115, 31482860, 32167270, 33251560, 44076004, 45034178, 46552184, 55095005, 58190230, 62965720, 64334540, 73984721, 88152008, 90068356, 110190010, 112585445, 116380460, 128669080, 147969442, 180136712, 220380020, 225170890, 232760920, 295938884, 369923605, 440760040, 450341780, 517893047, 591877768, 739847210, 900683560, 1035786094, 1479694420, 2071572188, 2589465235, 2959388840, 4143144376, 5178930470, 10357860940, 20715721880]

約数ペア:

[(1, 20715721880), (2, 10357860940), (4, 5178930470), (5, 4143144376), (7, 2959388840), (8, 2589465235), (10, 2071572188), (14, 1479694420), (20, 1035786094), (23, 900683560), (28, 739847210), (35, 591877768), (40, 517893047), (46, 450341780), (47, 440760040), (56, 369923605), (70, 295938884), (89, 232760920), (92, 225170890), (94, 220380020), (115, 180136712), (140, 147969442), (161, 128669080), (178, 116380460), (184, 112585445), (188, 110190010), (230, 90068356), (235, 88152008), (280, 73984721), (322, 64334540), (329, 62965720), (356, 58190230), (376, 55095005), (445, 46552184), (460, 45034178), (470, 44076004), (623, 33251560), (644, 32167270), (658, 31482860), (712, 29095115), (769, 26938520), (805, 25733816), (890, 23276092), (920, 22517089), (940, 22038002), (1081, 19163480), (1246, 16625780), (1288, 16083635), (1316, 15741430), (1538, 13469260), (1610, 12866908), (1645, 12593144), (1780, 11638046), (1880, 11019001), (2047, 10120040), (2162, 9581740), (2492, 8312890), (2632, 7870715), (3076, 6734630), (3115, 6650312), (3220, 6433454), (3290, 6296572), (3560, 5819023), (3845, 5387704), (4094, 5060020), (4183, 4952360), (4324, 4790870), (4984, 4156445), (5383, 3848360), (5405, 3832696), (6152, 3367315), (6230, 3325156), (6440, 3216727), (6580, 3148286), (7567, 2737640), (7690, 2693852), (8188, 2530010), (8366, 2476180), (8648, 2395435), (10235, 2024008), (10766, 1924180), (10810, 1916348), (12460, 1662578), (13160, 1574143), (14329, 1445720), (15134, 1368820), (15380, 1346926), (16376, 1265005), (16732, 1238090), (17687, 1171240), (20470, 1012004), (20915, 990472), (21532, 962090), (21620, 958174), (24920, 831289), (26915, 769672), (28658, 722860), (29281, 707480), (30268, 684410), (30760, 673463), (33464, 619045), (35374, 585620), (36143, 573160), (37835, 547528), (40940, 506002), (41830, 495236), (43064, 481045), (43240, 479087), (53830, 384836), (57316, 361430), (58562, 353740), (60536, 342205), (68441, 302680), (70748, 292810), (71645, 289144), (72286, 286580), (75670, 273764), (81880, 253001), (83660, 247618), (88435, 234248), (96209, 215320), (107660, 192418), (114632, 180715), (117124, 176870), (123809, 167320), (136882, 151340), (141496, 146405), (143290, 144572)]