397164080

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{9949}}^1$

素因数の和:10461

約数の個数: 40

約数和(自身を含む): 925350000

約数和(自身を除く): 528185920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 998, 1996, 2495, 3992, 4990, 7984, 9949, 9980, 19898, 19960, 39796, 39920, 49745, 79592, 99490, 159184, 198980, 397960, 795920, 4964551, 9929102, 19858204, 24822755, 39716408, 49645510, 79432816, 99291020, 198582040, 397164080]

約数ペア:

[(1, 397164080), (2, 198582040), (4, 99291020), (5, 79432816), (8, 49645510), (10, 39716408), (16, 24822755), (20, 19858204), (40, 9929102), (80, 4964551), (499, 795920), (998, 397960), (1996, 198980), (2495, 159184), (3992, 99490), (4990, 79592), (7984, 49745), (9949, 39920), (9980, 39796), (19898, 19960)]