21125845

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{1087}}^1$

素因数の和:1141

約数の個数: 24

約数和(自身を含む): 28670976

約数和(自身を除く): 7545131

約数列:

[1, 5, 13, 23, 65, 115, 169, 299, 845, 1087, 1495, 3887, 5435, 14131, 19435, 25001, 70655, 125005, 183703, 325013, 918515, 1625065, 4225169, 21125845]

約数ペア:

[(1, 21125845), (5, 4225169), (13, 1625065), (23, 918515), (65, 325013), (115, 183703), (169, 125005), (299, 70655), (845, 25001), (1087, 19435), (1495, 14131), (3887, 5435)]