20111975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3257}}^1$

素因数の和:3299

約数の個数: 24

約数和(自身を含む): 28279440

約数和(自身を除く): 8167465

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3257, 6175, 16285, 42341, 61883, 81425, 211705, 309415, 804479, 1058525, 1547075, 4022395, 20111975]

約数ペア:

[(1, 20111975), (5, 4022395), (13, 1547075), (19, 1058525), (25, 804479), (65, 309415), (95, 211705), (247, 81425), (325, 61883), (475, 42341), (1235, 16285), (3257, 6175)]