201801600020

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{25938509}}^1$

素因数の和:25938907

約数の個数: 24

約数和(自身を含む): 424872793800

約数和(自身を除く): 223071193780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 25938509, 51877018, 103754036, 129692545, 259385090, 518770180, 10090080001, 20180160002, 40360320004, 50450400005, 100900800010, 201801600020]

約数ペア:

[(1, 201801600020), (2, 100900800010), (4, 50450400005), (5, 40360320004), (10, 20180160002), (20, 10090080001), (389, 518770180), (778, 259385090), (1556, 129692545), (1945, 103754036), (3890, 51877018), (7780, 25938509)]