20856025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1583}}^1$

素因数の和:1641

約数の個数: 24

約数和(自身を含む): 28283904

約数和(自身を除く): 7427879

約数列:

[1, 5, 17, 25, 31, 85, 155, 425, 527, 775, 1583, 2635, 7915, 13175, 26911, 39575, 49073, 134555, 245365, 672775, 834241, 1226825, 4171205, 20856025]

約数ペア:

[(1, 20856025), (5, 4171205), (17, 1226825), (25, 834241), (31, 672775), (85, 245365), (155, 134555), (425, 49073), (527, 39575), (775, 26911), (1583, 13175), (2635, 7915)]