51402320

素因数分解:

$2^4\times 5^1\times {\mathrm{642529}}^1$

素因数の和:642542

約数の個数: 20

約数和(自身を含む): 119510580

約数和(自身を除く): 68108260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 642529, 1285058, 2570116, 3212645, 5140232, 6425290, 10280464, 12850580, 25701160, 51402320]

約数ペア:

[(1, 51402320), (2, 25701160), (4, 12850580), (5, 10280464), (8, 6425290), (10, 5140232), (16, 3212645), (20, 2570116), (40, 1285058), (80, 642529)]