681861025

素因数分解:

$5^2\times {\mathrm{139}}^1\times {\mathrm{239}}^1\times {\mathrm{821}}^1$

素因数の和:1209

約数の個数: 24

約数和(自身を含む): 856195200

約数和(自身を除く): 174334175

約数列:

[1, 5, 25, 139, 239, 695, 821, 1195, 3475, 4105, 5975, 20525, 33221, 114119, 166105, 196219, 570595, 830525, 981095, 2852975, 4905475, 27274441, 136372205, 681861025]

約数ペア:

[(1, 681861025), (5, 136372205), (25, 27274441), (139, 4905475), (239, 2852975), (695, 981095), (821, 830525), (1195, 570595), (3475, 196219), (4105, 166105), (5975, 114119), (20525, 33221)]