20722040

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{821}}^1$

素因数の和:1463

約数の個数: 32

約数和(自身を含む): 46755360

約数和(自身を除く): 26033320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 821, 1262, 1642, 2524, 3155, 3284, 4105, 5048, 6310, 6568, 8210, 12620, 16420, 25240, 32840, 518051, 1036102, 2072204, 2590255, 4144408, 5180510, 10361020, 20722040]

約数ペア:

[(1, 20722040), (2, 10361020), (4, 5180510), (5, 4144408), (8, 2590255), (10, 2072204), (20, 1036102), (40, 518051), (631, 32840), (821, 25240), (1262, 16420), (1642, 12620), (2524, 8210), (3155, 6568), (3284, 6310), (4105, 5048)]