21964525

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:222

約数の個数: 36

約数和(自身を含む): 30724596

約数和(自身を除く): 8760071

約数列:

[1, 5, 11, 25, 53, 55, 121, 137, 265, 275, 583, 605, 685, 1325, 1507, 2915, 3025, 3425, 6413, 7261, 7535, 14575, 16577, 32065, 36305, 37675, 79871, 82885, 160325, 181525, 399355, 414425, 878581, 1996775, 4392905, 21964525]

約数ペア:

[(1, 21964525), (5, 4392905), (11, 1996775), (25, 878581), (53, 414425), (55, 399355), (121, 181525), (137, 160325), (265, 82885), (275, 79871), (583, 37675), (605, 36305), (685, 32065), (1325, 16577), (1507, 14575), (2915, 7535), (3025, 7261), (3425, 6413)]