21302210

素因数分解:

$2^1\times 5^1\times {\mathrm{839}}^1\times {\mathrm{2539}}^1$

素因数の和:3385

約数の個数: 16

約数和(自身を含む): 38404800

約数和(自身を除く): 17102590

約数列:

[1, 2, 5, 10, 839, 1678, 2539, 4195, 5078, 8390, 12695, 25390, 2130221, 4260442, 10651105, 21302210]

約数ペア:

[(1, 21302210), (2, 10651105), (5, 4260442), (10, 2130221), (839, 25390), (1678, 12695), (2539, 8390), (4195, 5078)]