21371372

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{2543}}^1$

素因数の和:2749

約数の個数: 24

約数和(自身を含む): 41029632

約数和(自身を除く): 19658260

約数列:

[1, 2, 4, 11, 22, 44, 191, 382, 764, 2101, 2543, 4202, 5086, 8404, 10172, 27973, 55946, 111892, 485713, 971426, 1942852, 5342843, 10685686, 21371372]

約数ペア:

[(1, 21371372), (2, 10685686), (4, 5342843), (11, 1942852), (22, 971426), (44, 485713), (191, 111892), (382, 55946), (764, 27973), (2101, 10172), (2543, 8404), (4202, 5086)]