20604759

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{457}}^1$

素因数の和:599

約数の個数: 32

約数和(自身を含む): 33415680

約数和(自身を除く): 12810921

約数列:

[1, 3, 7, 19, 21, 57, 113, 133, 339, 399, 457, 791, 1371, 2147, 2373, 3199, 6441, 8683, 9597, 15029, 26049, 45087, 51641, 60781, 154923, 182343, 361487, 981179, 1084461, 2943537, 6868253, 20604759]

約数ペア:

[(1, 20604759), (3, 6868253), (7, 2943537), (19, 1084461), (21, 981179), (57, 361487), (113, 182343), (133, 154923), (339, 60781), (399, 51641), (457, 45087), (791, 26049), (1371, 15029), (2147, 9597), (2373, 8683), (3199, 6441)]