64211320

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{3217}}^1$

素因数の和:3727

約数の個数: 32

約数和(自身を含む): 144810000

約数和(自身を除く): 80598680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1996, 2495, 3217, 3992, 4990, 6434, 9980, 12868, 16085, 19960, 25736, 32170, 64340, 128680, 1605283, 3210566, 6421132, 8026415, 12842264, 16052830, 32105660, 64211320]

約数ペア:

[(1, 64211320), (2, 32105660), (4, 16052830), (5, 12842264), (8, 8026415), (10, 6421132), (20, 3210566), (40, 1605283), (499, 128680), (998, 64340), (1996, 32170), (2495, 25736), (3217, 19960), (3992, 16085), (4990, 12868), (6434, 9980)]