161915975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{21661}}^1$

素因数の和:21707

約数の個数: 24

約数和(自身を含む): 225631392

約数和(自身を除く): 63715417

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 7475, 21661, 108305, 281593, 498203, 541525, 1407965, 2491015, 6476639, 7039825, 12455075, 32383195, 161915975]

約数ペア:

[(1, 161915975), (5, 32383195), (13, 12455075), (23, 7039825), (25, 6476639), (65, 2491015), (115, 1407965), (299, 541525), (325, 498203), (575, 281593), (1495, 108305), (7475, 21661)]