20427965

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:317

約数の個数: 24

約数和(自身を含む): 26554272

約数和(自身を除く): 6126307

約数列:

[1, 5, 17, 67, 85, 211, 289, 335, 1055, 1139, 1445, 3587, 5695, 14137, 17935, 19363, 60979, 70685, 96815, 240329, 304895, 1201645, 4085593, 20427965]

約数ペア:

[(1, 20427965), (5, 4085593), (17, 1201645), (67, 304895), (85, 240329), (211, 96815), (289, 70685), (335, 60979), (1055, 19363), (1139, 17935), (1445, 14137), (3587, 5695)]