664162556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{1361}}^1\times {\mathrm{6421}}^1$

素因数の和:7805

約数の個数: 24

約数和(自身を含む): 1224546960

約数和(自身を除く): 560384404

約数列:

[1, 2, 4, 19, 38, 76, 1361, 2722, 5444, 6421, 12842, 25684, 25859, 51718, 103436, 121999, 243998, 487996, 8738981, 17477962, 34955924, 166040639, 332081278, 664162556]

約数ペア:

[(1, 664162556), (2, 332081278), (4, 166040639), (19, 34955924), (38, 17477962), (76, 8738981), (1361, 487996), (2722, 243998), (5444, 121999), (6421, 103436), (12842, 51718), (25684, 25859)]