639913983

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{2237}}^1$

素因数の和:2407

約数の個数: 32

約数和(自身を含む): 928143360

約数和(自身を除く): 288229377

約数列:

[1, 3, 17, 51, 71, 79, 213, 237, 1207, 1343, 2237, 3621, 4029, 5609, 6711, 16827, 38029, 95353, 114087, 158827, 176723, 286059, 476481, 530169, 2700059, 3004291, 8100177, 9012873, 12547333, 37641999, 213304661, 639913983]

約数ペア:

[(1, 639913983), (3, 213304661), (17, 37641999), (51, 12547333), (71, 9012873), (79, 8100177), (213, 3004291), (237, 2700059), (1207, 530169), (1343, 476481), (2237, 286059), (3621, 176723), (4029, 158827), (5609, 114087), (6711, 95353), (16827, 38029)]