21519960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1$

素因数の和:186

約数の個数: 256

約数和(自身を含む): 85847040

約数和(自身を除く): 64327080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 17, 20, 21, 22, 24, 28, 30, 33, 34, 35, 40, 42, 44, 51, 55, 56, 60, 66, 68, 70, 77, 84, 85, 88, 102, 105, 110, 119, 120, 132, 136, 137, 140, 154, 165, 168, 170, 187, 204, 210, 220, 231, 238, 255, 264, 274, 280, 308, 330, 340, 357, 374, 385, 408, 411, 420, 440, 462, 476, 510, 548, 561, 595, 616, 660, 680, 685, 714, 748, 770, 822, 840, 924, 935, 952, 959, 1020, 1096, 1122, 1155, 1190, 1309, 1320, 1370, 1428, 1496, 1507, 1540, 1644, 1785, 1848, 1870, 1918, 2040, 2055, 2244, 2310, 2329, 2380, 2618, 2740, 2805, 2856, 2877, 3014, 3080, 3288, 3570, 3740, 3836, 3927, 4110, 4488, 4521, 4620, 4658, 4760, 4795, 5236, 5480, 5610, 5754, 6028, 6545, 6987, 7140, 7480, 7535, 7672, 7854, 8220, 9042, 9240, 9316, 9590, 10472, 10549, 11220, 11508, 11645, 12056, 13090, 13974, 14280, 14385, 15070, 15708, 16303, 16440, 18084, 18632, 19180, 19635, 21098, 22440, 22605, 23016, 23290, 25619, 26180, 27948, 28770, 30140, 31416, 31647, 32606, 34935, 36168, 38360, 39270, 42196, 45210, 46580, 48909, 51238, 52360, 52745, 55896, 57540, 60280, 63294, 65212, 69870, 76857, 78540, 81515, 84392, 90420, 93160, 97818, 102476, 105490, 115080, 126588, 128095, 130424, 139740, 153714, 157080, 158235, 163030, 179333, 180840, 195636, 204952, 210980, 244545, 253176, 256190, 279480, 307428, 316470, 326060, 358666, 384285, 391272, 421960, 489090, 512380, 537999, 614856, 632940, 652120, 717332, 768570, 896665, 978180, 1024760, 1075998, 1265880, 1434664, 1537140, 1793330, 1956360, 2151996, 2689995, 3074280, 3586660, 4303992, 5379990, 7173320, 10759980, 21519960]

約数ペア:

[(1, 21519960), (2, 10759980), (3, 7173320), (4, 5379990), (5, 4303992), (6, 3586660), (7, 3074280), (8, 2689995), (10, 2151996), (11, 1956360), (12, 1793330), (14, 1537140), (15, 1434664), (17, 1265880), (20, 1075998), (21, 1024760), (22, 978180), (24, 896665), (28, 768570), (30, 717332), (33, 652120), (34, 632940), (35, 614856), (40, 537999), (42, 512380), (44, 489090), (51, 421960), (55, 391272), (56, 384285), (60, 358666), (66, 326060), (68, 316470), (70, 307428), (77, 279480), (84, 256190), (85, 253176), (88, 244545), (102, 210980), (105, 204952), (110, 195636), (119, 180840), (120, 179333), (132, 163030), (136, 158235), (137, 157080), (140, 153714), (154, 139740), (165, 130424), (168, 128095), (170, 126588), (187, 115080), (204, 105490), (210, 102476), (220, 97818), (231, 93160), (238, 90420), (255, 84392), (264, 81515), (274, 78540), (280, 76857), (308, 69870), (330, 65212), (340, 63294), (357, 60280), (374, 57540), (385, 55896), (408, 52745), (411, 52360), (420, 51238), (440, 48909), (462, 46580), (476, 45210), (510, 42196), (548, 39270), (561, 38360), (595, 36168), (616, 34935), (660, 32606), (680, 31647), (685, 31416), (714, 30140), (748, 28770), (770, 27948), (822, 26180), (840, 25619), (924, 23290), (935, 23016), (952, 22605), (959, 22440), (1020, 21098), (1096, 19635), (1122, 19180), (1155, 18632), (1190, 18084), (1309, 16440), (1320, 16303), (1370, 15708), (1428, 15070), (1496, 14385), (1507, 14280), (1540, 13974), (1644, 13090), (1785, 12056), (1848, 11645), (1870, 11508), (1918, 11220), (2040, 10549), (2055, 10472), (2244, 9590), (2310, 9316), (2329, 9240), (2380, 9042), (2618, 8220), (2740, 7854), (2805, 7672), (2856, 7535), (2877, 7480), (3014, 7140), (3080, 6987), (3288, 6545), (3570, 6028), (3740, 5754), (3836, 5610), (3927, 5480), (4110, 5236), (4488, 4795), (4521, 4760), (4620, 4658)]