438555640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1\times {\mathrm{503}}^1$

素因数の和:892

約数の個数: 64

約数和(自身を含む): 1005903360

約数和(自身を除く): 567347720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 307, 355, 503, 568, 614, 710, 1006, 1228, 1420, 1535, 2012, 2456, 2515, 2840, 3070, 4024, 5030, 6140, 10060, 12280, 20120, 21797, 35713, 43594, 71426, 87188, 108985, 142852, 154421, 174376, 178565, 217970, 285704, 308842, 357130, 435940, 617684, 714260, 772105, 871880, 1235368, 1428520, 1544210, 3088420, 6176840, 10963891, 21927782, 43855564, 54819455, 87711128, 109638910, 219277820, 438555640]

約数ペア:

[(1, 438555640), (2, 219277820), (4, 109638910), (5, 87711128), (8, 54819455), (10, 43855564), (20, 21927782), (40, 10963891), (71, 6176840), (142, 3088420), (284, 1544210), (307, 1428520), (355, 1235368), (503, 871880), (568, 772105), (614, 714260), (710, 617684), (1006, 435940), (1228, 357130), (1420, 308842), (1535, 285704), (2012, 217970), (2456, 178565), (2515, 174376), (2840, 154421), (3070, 142852), (4024, 108985), (5030, 87188), (6140, 71426), (10060, 43594), (12280, 35713), (20120, 21797)]