20612801780

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{2065411}}^1$

素因数の和:2065919

約数の個数: 24

約数和(自身を含む): 43373652000

約数和(自身を除く): 22760850220

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 9980, 2065411, 4130822, 8261644, 10327055, 20654110, 41308220, 1030640089, 2061280178, 4122560356, 5153200445, 10306400890, 20612801780]

約数ペア:

[(1, 20612801780), (2, 10306400890), (4, 5153200445), (5, 4122560356), (10, 2061280178), (20, 1030640089), (499, 41308220), (998, 20654110), (1996, 10327055), (2495, 8261644), (4990, 4130822), (9980, 2065411)]