18216575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2437}}^1$

素因数の和:2483

約数の個数: 24

約数和(自身を含む): 25394208

約数和(自身を除く): 7177633

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2437, 7475, 12185, 31681, 56051, 60925, 158405, 280255, 728663, 792025, 1401275, 3643315, 18216575]

約数ペア:

[(1, 18216575), (5, 3643315), (13, 1401275), (23, 792025), (25, 728663), (65, 280255), (115, 158405), (299, 60925), (325, 56051), (575, 31681), (1495, 12185), (2437, 7475)]