18815920

素因数分解:

$2^4\times 5^1\times {\mathrm{235199}}^1$

素因数の和:235212

約数の個数: 20

約数和(自身を含む): 43747200

約数和(自身を除く): 24931280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 235199, 470398, 940796, 1175995, 1881592, 2351990, 3763184, 4703980, 9407960, 18815920]

約数ペア:

[(1, 18815920), (2, 9407960), (4, 4703980), (5, 3763184), (8, 2351990), (10, 1881592), (16, 1175995), (20, 940796), (40, 470398), (80, 235199)]