128927480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4127}}^1$

素因数の和:4220

約数の個数: 64

約数和(自身を含む): 320993280

約数和(自身を除く): 192065800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 1420, 1562, 2840, 3124, 3905, 4127, 6248, 7810, 8254, 15620, 16508, 20635, 31240, 33016, 41270, 45397, 82540, 90794, 165080, 181588, 226985, 293017, 363176, 453970, 586034, 907940, 1172068, 1465085, 1815880, 2344136, 2930170, 3223187, 5860340, 6446374, 11720680, 12892748, 16115935, 25785496, 32231870, 64463740, 128927480]

約数ペア:

[(1, 128927480), (2, 64463740), (4, 32231870), (5, 25785496), (8, 16115935), (10, 12892748), (11, 11720680), (20, 6446374), (22, 5860340), (40, 3223187), (44, 2930170), (55, 2344136), (71, 1815880), (88, 1465085), (110, 1172068), (142, 907940), (220, 586034), (284, 453970), (355, 363176), (440, 293017), (568, 226985), (710, 181588), (781, 165080), (1420, 90794), (1562, 82540), (2840, 45397), (3124, 41270), (3905, 33016), (4127, 31240), (6248, 20635), (7810, 16508), (8254, 15620)]