645858

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{677}}^1$

素因数の和:738

約数の個数: 24

約数和(自身を含む): 1427868

約数和(自身を除く): 782010

約数列:

[1, 2, 3, 6, 9, 18, 53, 106, 159, 318, 477, 677, 954, 1354, 2031, 4062, 6093, 12186, 35881, 71762, 107643, 215286, 322929, 645858]

約数ペア:

[(1, 645858), (2, 322929), (3, 215286), (6, 107643), (9, 71762), (18, 35881), (53, 12186), (106, 6093), (159, 4062), (318, 2031), (477, 1354), (677, 954)]