20450920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73039}}^1$

素因数の和:73057

約数の個数: 32

約数和(自身を含む): 52588800

約数和(自身を除く): 32137880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73039, 146078, 292156, 365195, 511273, 584312, 730390, 1022546, 1460780, 2045092, 2556365, 2921560, 4090184, 5112730, 10225460, 20450920]

約数ペア:

[(1, 20450920), (2, 10225460), (4, 5112730), (5, 4090184), (7, 2921560), (8, 2556365), (10, 2045092), (14, 1460780), (20, 1022546), (28, 730390), (35, 584312), (40, 511273), (56, 365195), (70, 292156), (140, 146078), (280, 73039)]