640799866

素因数分解:

$2^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{205253}}^1$

素因数の和:205485

約数の個数: 16

約数和(自身を含む): 1103445504

約数和(自身を除く): 462645638

約数列:

[1, 2, 7, 14, 223, 446, 1561, 3122, 205253, 410506, 1436771, 2873542, 45771419, 91542838, 320399933, 640799866]

約数ペア:

[(1, 640799866), (2, 320399933), (7, 91542838), (14, 45771419), (223, 2873542), (446, 1436771), (1561, 410506), (3122, 205253)]