20862520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74509}}^1$

素因数の和:74527

約数の個数: 32

約数和(自身を含む): 53647200

約数和(自身を除く): 32784680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74509, 149018, 298036, 372545, 521563, 596072, 745090, 1043126, 1490180, 2086252, 2607815, 2980360, 4172504, 5215630, 10431260, 20862520]

約数ペア:

[(1, 20862520), (2, 10431260), (4, 5215630), (5, 4172504), (7, 2980360), (8, 2607815), (10, 2086252), (14, 1490180), (20, 1043126), (28, 745090), (35, 596072), (40, 521563), (56, 372545), (70, 298036), (140, 149018), (280, 74509)]