21775850

素因数分解:

$2^1\times 5^2\times {\mathrm{491}}^1\times {\mathrm{887}}^1$

素因数の和:1390

約数の個数: 24

約数和(自身を含む): 40631328

約数和(自身を除く): 18855478

約数列:

[1, 2, 5, 10, 25, 50, 491, 887, 982, 1774, 2455, 4435, 4910, 8870, 12275, 22175, 24550, 44350, 435517, 871034, 2177585, 4355170, 10887925, 21775850]

約数ペア:

[(1, 21775850), (2, 10887925), (5, 4355170), (10, 2177585), (25, 871034), (50, 435517), (491, 44350), (887, 24550), (982, 22175), (1774, 12275), (2455, 8870), (4435, 4910)]