20273855

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{709}}^1$

素因数の和:783

約数の個数: 32

約数和(自身を含む): 29990400

約数和(自身を除く): 9716545

約数列:

[1, 5, 7, 19, 35, 43, 95, 133, 215, 301, 665, 709, 817, 1505, 3545, 4085, 4963, 5719, 13471, 24815, 28595, 30487, 67355, 94297, 152435, 213409, 471485, 579253, 1067045, 2896265, 4054771, 20273855]

約数ペア:

[(1, 20273855), (5, 4054771), (7, 2896265), (19, 1067045), (35, 579253), (43, 471485), (95, 213409), (133, 152435), (215, 94297), (301, 67355), (665, 30487), (709, 28595), (817, 24815), (1505, 13471), (3545, 5719), (4085, 4963)]