81210025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{3163}}^1$

素因数の和:3265

約数の個数: 24

約数和(自身を含む): 109854080

約数和(自身を除く): 28644055

約数列:

[1, 5, 13, 25, 65, 79, 325, 395, 1027, 1975, 3163, 5135, 15815, 25675, 41119, 79075, 205595, 249877, 1027975, 1249385, 3248401, 6246925, 16242005, 81210025]

約数ペア:

[(1, 81210025), (5, 16242005), (13, 6246925), (25, 3248401), (65, 1249385), (79, 1027975), (325, 249877), (395, 205595), (1027, 79075), (1975, 41119), (3163, 25675), (5135, 15815)]