646531505

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{1873}}^1$

素因数の和:2057

約数の個数: 32

約数和(自身を含む): 854903808

約数和(自身を除く): 208372303

約数列:

[1, 5, 17, 31, 85, 131, 155, 527, 655, 1873, 2227, 2635, 4061, 9365, 11135, 20305, 31841, 58063, 69037, 159205, 245363, 290315, 345185, 987071, 1226815, 4171171, 4935355, 7606253, 20855855, 38031265, 129306301, 646531505]

約数ペア:

[(1, 646531505), (5, 129306301), (17, 38031265), (31, 20855855), (85, 7606253), (131, 4935355), (155, 4171171), (527, 1226815), (655, 987071), (1873, 345185), (2227, 290315), (2635, 245363), (4061, 159205), (9365, 69037), (11135, 58063), (20305, 31841)]