21798950

素因数分解:

$2^1\times 5^2\times {\mathrm{449}}^1\times {\mathrm{971}}^1$

素因数の和:1432

約数の個数: 24

約数和(自身を含む): 40678200

約数和(自身を除く): 18879250

約数列:

[1, 2, 5, 10, 25, 50, 449, 898, 971, 1942, 2245, 4490, 4855, 9710, 11225, 22450, 24275, 48550, 435979, 871958, 2179895, 4359790, 10899475, 21798950]

約数ペア:

[(1, 21798950), (2, 10899475), (5, 4359790), (10, 2179895), (25, 871958), (50, 435979), (449, 48550), (898, 24275), (971, 22450), (1942, 11225), (2245, 9710), (4490, 4855)]