31980205

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{2137}}^1$

素因数の和:2256

約数の個数: 16

約数和(自身を含む): 39869424

約数和(自身を除く): 7889219

約数列:

[1, 5, 41, 73, 205, 365, 2137, 2993, 10685, 14965, 87617, 156001, 438085, 780005, 6396041, 31980205]

約数ペア:

[(1, 31980205), (5, 6396041), (41, 780005), (73, 438085), (205, 156001), (365, 87617), (2137, 14965), (2993, 10685)]