18715672720

素因数分解:

$2^4\times 5^1\times {\mathrm{233945909}}^1$

素因数の和:233945922

約数の個数: 20

約数和(自身を含む): 43513939260

約数和(自身を除く): 24798266540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233945909, 467891818, 935783636, 1169729545, 1871567272, 2339459090, 3743134544, 4678918180, 9357836360, 18715672720]

約数ペア:

[(1, 18715672720), (2, 9357836360), (4, 4678918180), (5, 3743134544), (8, 2339459090), (10, 1871567272), (16, 1169729545), (20, 935783636), (40, 467891818), (80, 233945909)]