785667640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{2281}}^1$

素因数の和:2480

約数の個数: 64

約数和(自身を含む): 1807344000

約数和(自身を除く): 1021676360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 109, 158, 218, 316, 395, 436, 545, 632, 790, 872, 1090, 1580, 2180, 2281, 3160, 4360, 4562, 8611, 9124, 11405, 17222, 18248, 22810, 34444, 43055, 45620, 68888, 86110, 91240, 172220, 180199, 248629, 344440, 360398, 497258, 720796, 900995, 994516, 1243145, 1441592, 1801990, 1989032, 2486290, 3603980, 4972580, 7207960, 9945160, 19641691, 39283382, 78566764, 98208455, 157133528, 196416910, 392833820, 785667640]

約数ペア:

[(1, 785667640), (2, 392833820), (4, 196416910), (5, 157133528), (8, 98208455), (10, 78566764), (20, 39283382), (40, 19641691), (79, 9945160), (109, 7207960), (158, 4972580), (218, 3603980), (316, 2486290), (395, 1989032), (436, 1801990), (545, 1441592), (632, 1243145), (790, 994516), (872, 900995), (1090, 720796), (1580, 497258), (2180, 360398), (2281, 344440), (3160, 248629), (4360, 180199), (4562, 172220), (8611, 91240), (9124, 86110), (11405, 68888), (17222, 45620), (18248, 43055), (22810, 34444)]