16806320

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{499}}^1$

素因数の和:933

約数の個数: 40

約数和(自身を含む): 39246000

約数和(自身を除く): 22439680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 499, 842, 998, 1684, 1996, 2105, 2495, 3368, 3992, 4210, 4990, 6736, 7984, 8420, 9980, 16840, 19960, 33680, 39920, 210079, 420158, 840316, 1050395, 1680632, 2100790, 3361264, 4201580, 8403160, 16806320]

約数ペア:

[(1, 16806320), (2, 8403160), (4, 4201580), (5, 3361264), (8, 2100790), (10, 1680632), (16, 1050395), (20, 840316), (40, 420158), (80, 210079), (421, 39920), (499, 33680), (842, 19960), (998, 16840), (1684, 9980), (1996, 8420), (2105, 7984), (2495, 6736), (3368, 4990), (3992, 4210)]