1991774320

素因数分解:

$2^4\times 5^1\times {\mathrm{24897179}}^1$

素因数の和:24897192

約数の個数: 20

約数和(自身を含む): 4630875480

約数和(自身を除く): 2639101160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 24897179, 49794358, 99588716, 124485895, 199177432, 248971790, 398354864, 497943580, 995887160, 1991774320]

約数ペア:

[(1, 1991774320), (2, 995887160), (4, 497943580), (5, 398354864), (8, 248971790), (10, 199177432), (16, 124485895), (20, 99588716), (40, 49794358), (80, 24897179)]