20203939

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2\times {\mathrm{101}}^1$

素因数の和:207

約数の個数: 24

約数和(自身を含む): 25307424

約数和(自身を除く): 5103485

約数列:

[1, 7, 17, 41, 101, 119, 287, 697, 707, 1681, 1717, 4141, 4879, 11767, 12019, 28577, 28987, 70397, 169781, 200039, 492779, 1188467, 2886277, 20203939]

約数ペア:

[(1, 20203939), (7, 2886277), (17, 1188467), (41, 492779), (101, 200039), (119, 169781), (287, 70397), (697, 28987), (707, 28577), (1681, 12019), (1717, 11767), (4141, 4879)]