19782840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2141}}^1$

素因数の和:2173

約数の個数: 128

約数和(自身を含む): 74027520

約数和(自身を除く): 54244680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2141, 2310, 3080, 4282, 4620, 6423, 8564, 9240, 10705, 12846, 14987, 17128, 21410, 23551, 25692, 29974, 32115, 42820, 44961, 47102, 51384, 59948, 64230, 70653, 74935, 85640, 89922, 94204, 117755, 119896, 128460, 141306, 149870, 164857, 179844, 188408, 224805, 235510, 256920, 282612, 299740, 329714, 353265, 359688, 449610, 471020, 494571, 565224, 599480, 659428, 706530, 824285, 899220, 942040, 989142, 1318856, 1413060, 1648570, 1798440, 1978284, 2472855, 2826120, 3297140, 3956568, 4945710, 6594280, 9891420, 19782840]

約数ペア:

[(1, 19782840), (2, 9891420), (3, 6594280), (4, 4945710), (5, 3956568), (6, 3297140), (7, 2826120), (8, 2472855), (10, 1978284), (11, 1798440), (12, 1648570), (14, 1413060), (15, 1318856), (20, 989142), (21, 942040), (22, 899220), (24, 824285), (28, 706530), (30, 659428), (33, 599480), (35, 565224), (40, 494571), (42, 471020), (44, 449610), (55, 359688), (56, 353265), (60, 329714), (66, 299740), (70, 282612), (77, 256920), (84, 235510), (88, 224805), (105, 188408), (110, 179844), (120, 164857), (132, 149870), (140, 141306), (154, 128460), (165, 119896), (168, 117755), (210, 94204), (220, 89922), (231, 85640), (264, 74935), (280, 70653), (308, 64230), (330, 59948), (385, 51384), (420, 47102), (440, 44961), (462, 42820), (616, 32115), (660, 29974), (770, 25692), (840, 23551), (924, 21410), (1155, 17128), (1320, 14987), (1540, 12846), (1848, 10705), (2141, 9240), (2310, 8564), (3080, 6423), (4282, 4620)]