21902555

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{2609}}^1$

素因数の和:2710

約数の個数: 16

約数和(自身を含む): 27812160

約数和(自身を除く): 5909605

約数列:

[1, 5, 23, 73, 115, 365, 1679, 2609, 8395, 13045, 60007, 190457, 300035, 952285, 4380511, 21902555]

約数ペア:

[(1, 21902555), (5, 4380511), (23, 952285), (73, 300035), (115, 190457), (365, 60007), (1679, 13045), (2609, 8395)]