20900493

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{269}}^1$

素因数の和:461

約数の個数: 24

約数和(自身を含む): 30958200

約数和(自身を除く): 10057707

約数列:

[1, 3, 9, 89, 97, 267, 269, 291, 801, 807, 873, 2421, 8633, 23941, 25899, 26093, 71823, 77697, 78279, 215469, 234837, 2322277, 6966831, 20900493]

約数ペア:

[(1, 20900493), (3, 6966831), (9, 2322277), (89, 234837), (97, 215469), (267, 78279), (269, 77697), (291, 71823), (801, 26093), (807, 25899), (873, 23941), (2421, 8633)]