18868940

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3671}}^1$

素因数の和:3937

約数の個数: 24

約数和(自身を含む): 39789792

約数和(自身を除く): 20920852

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3671, 5140, 7342, 14684, 18355, 36710, 73420, 943447, 1886894, 3773788, 4717235, 9434470, 18868940]

約数ペア:

[(1, 18868940), (2, 9434470), (4, 4717235), (5, 3773788), (10, 1886894), (20, 943447), (257, 73420), (514, 36710), (1028, 18355), (1285, 14684), (2570, 7342), (3671, 5140)]