291257320

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{16217}}^1$

素因数の和:16677

約数の個数: 32

約数和(自身を含む): 656829000

約数和(自身を除く): 365571680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4490, 8980, 16217, 17960, 32434, 64868, 81085, 129736, 162170, 324340, 648680, 7281433, 14562866, 29125732, 36407165, 58251464, 72814330, 145628660, 291257320]

約数ペア:

[(1, 291257320), (2, 145628660), (4, 72814330), (5, 58251464), (8, 36407165), (10, 29125732), (20, 14562866), (40, 7281433), (449, 648680), (898, 324340), (1796, 162170), (2245, 129736), (3592, 81085), (4490, 64868), (8980, 32434), (16217, 17960)]