20120756080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1\times {\mathrm{10501}}^1$

素因数の和:11114

約数の個数: 80

約数和(自身を含む): 47959189344

約数和(自身を除く): 27838433264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 557, 688, 860, 1114, 1720, 2228, 2785, 3440, 4456, 5570, 8912, 10501, 11140, 21002, 22280, 23951, 42004, 44560, 47902, 52505, 84008, 95804, 105010, 119755, 168016, 191608, 210020, 239510, 383216, 420040, 451543, 479020, 840080, 903086, 958040, 1806172, 1916080, 2257715, 3612344, 4515430, 5849057, 7224688, 9030860, 11698114, 18061720, 23396228, 29245285, 36123440, 46792456, 58490570, 93584912, 116981140, 233962280, 251509451, 467924560, 503018902, 1006037804, 1257547255, 2012075608, 2515094510, 4024151216, 5030189020, 10060378040, 20120756080]

約数ペア:

[(1, 20120756080), (2, 10060378040), (4, 5030189020), (5, 4024151216), (8, 2515094510), (10, 2012075608), (16, 1257547255), (20, 1006037804), (40, 503018902), (43, 467924560), (80, 251509451), (86, 233962280), (172, 116981140), (215, 93584912), (344, 58490570), (430, 46792456), (557, 36123440), (688, 29245285), (860, 23396228), (1114, 18061720), (1720, 11698114), (2228, 9030860), (2785, 7224688), (3440, 5849057), (4456, 4515430), (5570, 3612344), (8912, 2257715), (10501, 1916080), (11140, 1806172), (21002, 958040), (22280, 903086), (23951, 840080), (42004, 479020), (44560, 451543), (47902, 420040), (52505, 383216), (84008, 239510), (95804, 210020), (105010, 191608), (119755, 168016)]