20297915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{1277}}^1$

素因数の和:1327

約数の個数: 24

約数和(自身を含む): 28248912

約数和(自身を除く): 7950997

約数列:

[1, 5, 11, 17, 55, 85, 187, 289, 935, 1277, 1445, 3179, 6385, 14047, 15895, 21709, 70235, 108545, 238799, 369053, 1193995, 1845265, 4059583, 20297915]

約数ペア:

[(1, 20297915), (5, 4059583), (11, 1845265), (17, 1193995), (55, 369053), (85, 238799), (187, 108545), (289, 70235), (935, 21709), (1277, 15895), (1445, 14047), (3179, 6385)]