20530775

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{173}}^1$

素因数の和:331

約数の個数: 24

約数和(自身を含む): 26409024

約数和(自身を除く): 5878249

約数列:

[1, 5, 25, 47, 101, 173, 235, 505, 865, 1175, 2525, 4325, 4747, 8131, 17473, 23735, 40655, 87365, 118675, 203275, 436825, 821231, 4106155, 20530775]

約数ペア:

[(1, 20530775), (5, 4106155), (25, 821231), (47, 436825), (101, 203275), (173, 118675), (235, 87365), (505, 40655), (865, 23735), (1175, 17473), (2525, 8131), (4325, 4747)]