20221025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{139}}^1$

素因数の和:206

約数の個数: 36

約数和(自身を含む): 28800240

約数和(自身を除く): 8579215

約数列:

[1, 5, 11, 23, 25, 55, 115, 139, 253, 275, 529, 575, 695, 1265, 1529, 2645, 3197, 3475, 5819, 6325, 7645, 13225, 15985, 29095, 35167, 38225, 73531, 79925, 145475, 175835, 367655, 808841, 879175, 1838275, 4044205, 20221025]

約数ペア:

[(1, 20221025), (5, 4044205), (11, 1838275), (23, 879175), (25, 808841), (55, 367655), (115, 175835), (139, 145475), (253, 79925), (275, 73531), (529, 38225), (575, 35167), (695, 29095), (1265, 15985), (1529, 13225), (2645, 7645), (3197, 6325), (3475, 5819)]