19555557

素因数分解:

$3^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{881}}^1$

素因数の和:1049

約数の個数: 24

約数和(自身を含む): 30566592

約数和(自身を除く): 11011035

約数列:

[1, 3, 7, 21, 49, 147, 151, 453, 881, 1057, 2643, 3171, 6167, 7399, 18501, 22197, 43169, 129507, 133031, 399093, 931217, 2793651, 6518519, 19555557]

約数ペア:

[(1, 19555557), (3, 6518519), (7, 2793651), (21, 931217), (49, 399093), (147, 133031), (151, 129507), (453, 43169), (881, 22197), (1057, 18501), (2643, 7399), (3171, 6167)]