12916220

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1579}}^1$

素因数の和:1997

約数の個数: 24

約数和(自身を含む): 27207600

約数和(自身を除く): 14291380

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1579, 1636, 2045, 3158, 4090, 6316, 7895, 8180, 15790, 31580, 645811, 1291622, 2583244, 3229055, 6458110, 12916220]

約数ペア:

[(1, 12916220), (2, 6458110), (4, 3229055), (5, 2583244), (10, 1291622), (20, 645811), (409, 31580), (818, 15790), (1579, 8180), (1636, 7895), (2045, 6316), (3158, 4090)]