64218620

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{3911}}^1$

素因数の和:4741

約数の個数: 24

約数和(自身を含む): 135057888

約数和(自身を除く): 70839268

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 3911, 4105, 7822, 8210, 15644, 16420, 19555, 39110, 78220, 3210931, 6421862, 12843724, 16054655, 32109310, 64218620]

約数ペア:

[(1, 64218620), (2, 32109310), (4, 16054655), (5, 12843724), (10, 6421862), (20, 3210931), (821, 78220), (1642, 39110), (3284, 19555), (3911, 16420), (4105, 15644), (7822, 8210)]