20734820

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2309}}^1$

素因数の和:2767

約数の個数: 24

約数和(自身を含む): 43659000

約数和(自身を除く): 22924180

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 2309, 4490, 4618, 8980, 9236, 11545, 23090, 46180, 1036741, 2073482, 4146964, 5183705, 10367410, 20734820]

約数ペア:

[(1, 20734820), (2, 10367410), (4, 5183705), (5, 4146964), (10, 2073482), (20, 1036741), (449, 46180), (898, 23090), (1796, 11545), (2245, 9236), (2309, 8980), (4490, 4618)]