19855120

素因数分解:

$2^4\times 5^1\times {\mathrm{248189}}^1$

素因数の和:248202

約数の個数: 20

約数和(自身を含む): 46163340

約数和(自身を除く): 26308220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 248189, 496378, 992756, 1240945, 1985512, 2481890, 3971024, 4963780, 9927560, 19855120]

約数ペア:

[(1, 19855120), (2, 9927560), (4, 4963780), (5, 3971024), (8, 2481890), (10, 1985512), (16, 1240945), (20, 992756), (40, 496378), (80, 248189)]