21825505

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{1123}}^1$

素因数の和:1177

約数の個数: 24

約数和(自身を含む): 29619648

約数和(自身を除く): 7794143

約数列:

[1, 5, 13, 23, 65, 115, 169, 299, 845, 1123, 1495, 3887, 5615, 14599, 19435, 25829, 72995, 129145, 189787, 335777, 948935, 1678885, 4365101, 21825505]

約数ペア:

[(1, 21825505), (5, 4365101), (13, 1678885), (23, 948935), (65, 335777), (115, 189787), (169, 129145), (299, 72995), (845, 25829), (1123, 19435), (1495, 14599), (3887, 5615)]