65518820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79901}}^1$

素因数の和:79951

約数の個数: 24

約数和(自身を含む): 140947128

約数和(自身を除く): 75428308

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 79901, 159802, 319604, 399505, 799010, 1598020, 3275941, 6551882, 13103764, 16379705, 32759410, 65518820]

約数ペア:

[(1, 65518820), (2, 32759410), (4, 16379705), (5, 13103764), (10, 6551882), (20, 3275941), (41, 1598020), (82, 799010), (164, 399505), (205, 319604), (410, 159802), (820, 79901)]