20397025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4363}}^1$

素因数の和:4401

約数の個数: 24

約数和(自身を含む): 29221344

約数和(自身を除く): 8824319

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 275, 425, 935, 4363, 4675, 21815, 47993, 74171, 109075, 239965, 370855, 815881, 1199825, 1854275, 4079405, 20397025]

約数ペア:

[(1, 20397025), (5, 4079405), (11, 1854275), (17, 1199825), (25, 815881), (55, 370855), (85, 239965), (187, 109075), (275, 74171), (425, 47993), (935, 21815), (4363, 4675)]