257521266

素因数分解:

$2^1\times 3^2\times {\mathrm{353}}^1\times {\mathrm{40529}}^1$

素因数の和:40890

約数の個数: 24

約数和(自身を含む): 559557180

約数和(自身を除く): 302035914

約数列:

[1, 2, 3, 6, 9, 18, 353, 706, 1059, 2118, 3177, 6354, 40529, 81058, 121587, 243174, 364761, 729522, 14306737, 28613474, 42920211, 85840422, 128760633, 257521266]

約数ペア:

[(1, 257521266), (2, 128760633), (3, 85840422), (6, 42920211), (9, 28613474), (18, 14306737), (353, 729522), (706, 364761), (1059, 243174), (2118, 121587), (3177, 81058), (6354, 40529)]