20280854720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{3697}}^1$

素因数の和:3831

約数の個数: 224

約数和(自身を含む): 57710100480

約数和(自身を除く): 37429245760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 79, 80, 112, 124, 140, 155, 158, 160, 217, 224, 248, 280, 310, 316, 320, 395, 434, 448, 496, 553, 560, 620, 632, 790, 868, 992, 1085, 1106, 1120, 1240, 1264, 1580, 1736, 1984, 2170, 2212, 2240, 2449, 2480, 2528, 2765, 3160, 3472, 3697, 4340, 4424, 4898, 4960, 5056, 5530, 6320, 6944, 7394, 8680, 8848, 9796, 9920, 11060, 12245, 12640, 13888, 14788, 17143, 17360, 17696, 18485, 19592, 22120, 24490, 25280, 25879, 29576, 34286, 34720, 35392, 36970, 39184, 44240, 48980, 51758, 59152, 68572, 69440, 73940, 78368, 85715, 88480, 97960, 103516, 114607, 118304, 129395, 137144, 147880, 156736, 171430, 176960, 195920, 207032, 229214, 236608, 258790, 274288, 292063, 295760, 342860, 391840, 414064, 458428, 517580, 548576, 573035, 584126, 591520, 685720, 783680, 802249, 828128, 916856, 1035160, 1097152, 1146070, 1168252, 1183040, 1371440, 1460315, 1604498, 1656256, 1833712, 2044441, 2070320, 2292140, 2336504, 2742880, 2920630, 3208996, 3667424, 4011245, 4088882, 4140640, 4584280, 4673008, 5485760, 5841260, 6417992, 7334848, 8022490, 8177764, 8281280, 9053953, 9168560, 9346016, 10222205, 11682520, 12835984, 16044980, 16355528, 18107906, 18337120, 18692032, 20444410, 23365040, 25671968, 32089960, 32711056, 36215812, 36674240, 40888820, 45269765, 46730080, 51343936, 63377671, 64179920, 65422112, 72431624, 81777640, 90539530, 93460160, 126755342, 128359840, 130844224, 144863248, 163555280, 181079060, 253510684, 256719680, 289726496, 316888355, 327110560, 362158120, 507021368, 579452992, 633776710, 654221120, 724316240, 1014042736, 1267553420, 1448632480, 2028085472, 2535106840, 2897264960, 4056170944, 5070213680, 10140427360, 20280854720]

約数ペア:

[(1, 20280854720), (2, 10140427360), (4, 5070213680), (5, 4056170944), (7, 2897264960), (8, 2535106840), (10, 2028085472), (14, 1448632480), (16, 1267553420), (20, 1014042736), (28, 724316240), (31, 654221120), (32, 633776710), (35, 579452992), (40, 507021368), (56, 362158120), (62, 327110560), (64, 316888355), (70, 289726496), (79, 256719680), (80, 253510684), (112, 181079060), (124, 163555280), (140, 144863248), (155, 130844224), (158, 128359840), (160, 126755342), (217, 93460160), (224, 90539530), (248, 81777640), (280, 72431624), (310, 65422112), (316, 64179920), (320, 63377671), (395, 51343936), (434, 46730080), (448, 45269765), (496, 40888820), (553, 36674240), (560, 36215812), (620, 32711056), (632, 32089960), (790, 25671968), (868, 23365040), (992, 20444410), (1085, 18692032), (1106, 18337120), (1120, 18107906), (1240, 16355528), (1264, 16044980), (1580, 12835984), (1736, 11682520), (1984, 10222205), (2170, 9346016), (2212, 9168560), (2240, 9053953), (2449, 8281280), (2480, 8177764), (2528, 8022490), (2765, 7334848), (3160, 6417992), (3472, 5841260), (3697, 5485760), (4340, 4673008), (4424, 4584280), (4898, 4140640), (4960, 4088882), (5056, 4011245), (5530, 3667424), (6320, 3208996), (6944, 2920630), (7394, 2742880), (8680, 2336504), (8848, 2292140), (9796, 2070320), (9920, 2044441), (11060, 1833712), (12245, 1656256), (12640, 1604498), (13888, 1460315), (14788, 1371440), (17143, 1183040), (17360, 1168252), (17696, 1146070), (18485, 1097152), (19592, 1035160), (22120, 916856), (24490, 828128), (25280, 802249), (25879, 783680), (29576, 685720), (34286, 591520), (34720, 584126), (35392, 573035), (36970, 548576), (39184, 517580), (44240, 458428), (48980, 414064), (51758, 391840), (59152, 342860), (68572, 295760), (69440, 292063), (73940, 274288), (78368, 258790), (85715, 236608), (88480, 229214), (97960, 207032), (103516, 195920), (114607, 176960), (118304, 171430), (129395, 156736), (137144, 147880)]