20407575

素因数分解:

$3^1\times 5^2\times {\mathrm{107}}^1\times {\mathrm{2543}}^1$

素因数の和:2663

約数の個数: 24

約数和(自身を含む): 34069248

約数和(自身を除く): 13661673

約数列:

[1, 3, 5, 15, 25, 75, 107, 321, 535, 1605, 2543, 2675, 7629, 8025, 12715, 38145, 63575, 190725, 272101, 816303, 1360505, 4081515, 6802525, 20407575]

約数ペア:

[(1, 20407575), (3, 6802525), (5, 4081515), (15, 1360505), (25, 816303), (75, 272101), (107, 190725), (321, 63575), (535, 38145), (1605, 12715), (2543, 8025), (2675, 7629)]