7985020

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2543}}^1$

素因数の和:2709

約数の個数: 24

約数和(自身を含む): 16881984

約数和(自身を除く): 8896964

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 2543, 3140, 5086, 10172, 12715, 25430, 50860, 399251, 798502, 1597004, 1996255, 3992510, 7985020]

約数ペア:

[(1, 7985020), (2, 3992510), (4, 1996255), (5, 1597004), (10, 798502), (20, 399251), (157, 50860), (314, 25430), (628, 12715), (785, 10172), (1570, 5086), (2543, 3140)]