19958768

素因数分解:

$2^4\times {\mathrm{421}}^1\times {\mathrm{2963}}^1$

素因数の和:3392

約数の個数: 20

約数和(自身を含む): 38775048

約数和(自身を除く): 18816280

約数列:

[1, 2, 4, 8, 16, 421, 842, 1684, 2963, 3368, 5926, 6736, 11852, 23704, 47408, 1247423, 2494846, 4989692, 9979384, 19958768]

約数ペア:

[(1, 19958768), (2, 9979384), (4, 4989692), (8, 2494846), (16, 1247423), (421, 47408), (842, 23704), (1684, 11852), (2963, 6736), (3368, 5926)]