20352920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72689}}^1$

素因数の和:72707

約数の個数: 32

約数和(自身を含む): 52336800

約数和(自身を除く): 31983880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72689, 145378, 290756, 363445, 508823, 581512, 726890, 1017646, 1453780, 2035292, 2544115, 2907560, 4070584, 5088230, 10176460, 20352920]

約数ペア:

[(1, 20352920), (2, 10176460), (4, 5088230), (5, 4070584), (7, 2907560), (8, 2544115), (10, 2035292), (14, 1453780), (20, 1017646), (28, 726890), (35, 581512), (40, 508823), (56, 363445), (70, 290756), (140, 145378), (280, 72689)]