19817540

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6079}}^1$

素因数の和:6251

約数の個数: 24

約数和(自身を含む): 41879040

約数和(自身を除く): 22061500

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6079, 12158, 24316, 30395, 60790, 121580, 990877, 1981754, 3963508, 4954385, 9908770, 19817540]

約数ペア:

[(1, 19817540), (2, 9908770), (4, 4954385), (5, 3963508), (10, 1981754), (20, 990877), (163, 121580), (326, 60790), (652, 30395), (815, 24316), (1630, 12158), (3260, 6079)]