20643460

素因数分解:

$2^2\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1063}}^1$

素因数の和:2043

約数の個数: 24

約数和(自身を含む): 43436736

約数和(自身を除く): 22793276

約数列:

[1, 2, 4, 5, 10, 20, 971, 1063, 1942, 2126, 3884, 4252, 4855, 5315, 9710, 10630, 19420, 21260, 1032173, 2064346, 4128692, 5160865, 10321730, 20643460]

約数ペア:

[(1, 20643460), (2, 10321730), (4, 5160865), (5, 4128692), (10, 2064346), (20, 1032173), (971, 21260), (1063, 19420), (1942, 10630), (2126, 9710), (3884, 5315), (4252, 4855)]