20875525

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:202

約数の個数: 36

約数和(自身を含む): 29157856

約数和(自身を除く): 8282331

約数列:

[1, 5, 11, 25, 55, 67, 103, 121, 275, 335, 515, 605, 737, 1133, 1675, 2575, 3025, 3685, 5665, 6901, 8107, 12463, 18425, 28325, 34505, 40535, 62315, 75911, 172525, 202675, 311575, 379555, 835021, 1897775, 4175105, 20875525]

約数ペア:

[(1, 20875525), (5, 4175105), (11, 1897775), (25, 835021), (55, 379555), (67, 311575), (103, 202675), (121, 172525), (275, 75911), (335, 62315), (515, 40535), (605, 34505), (737, 28325), (1133, 18425), (1675, 12463), (2575, 8107), (3025, 6901), (3685, 5665)]