18215425

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 23927040

約数和(自身を除く): 5711615

約数列:

[1, 5, 23, 25, 79, 115, 395, 401, 575, 1817, 1975, 2005, 9085, 9223, 10025, 31679, 45425, 46115, 158395, 230575, 728617, 791975, 3643085, 18215425]

約数ペア:

[(1, 18215425), (5, 3643085), (23, 791975), (25, 728617), (79, 230575), (115, 158395), (395, 46115), (401, 45425), (575, 31679), (1817, 10025), (1975, 9223), (2005, 9085)]