420542721

素因数分解:

$3^2\times {\mathrm{113}}^1\times {\mathrm{257}}^1\times {\mathrm{1609}}^1$

素因数の和:1985

約数の個数: 24

約数和(自身を含む): 615593160

約数和(自身を除く): 195050439

約数列:

[1, 3, 9, 113, 257, 339, 771, 1017, 1609, 2313, 4827, 14481, 29041, 87123, 181817, 261369, 413513, 545451, 1240539, 1636353, 3721617, 46726969, 140180907, 420542721]

約数ペア:

[(1, 420542721), (3, 140180907), (9, 46726969), (113, 3721617), (257, 1636353), (339, 1240539), (771, 545451), (1017, 413513), (1609, 261369), (2313, 181817), (4827, 87123), (14481, 29041)]