25990220

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{9349}}^1$

素因数の和:9497

約数の個数: 24

約数和(自身を含む): 54978000

約数和(自身を除く): 28987780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 9349, 18698, 37396, 46745, 93490, 186980, 1299511, 2599022, 5198044, 6497555, 12995110, 25990220]

約数ペア:

[(1, 25990220), (2, 12995110), (4, 6497555), (5, 5198044), (10, 2599022), (20, 1299511), (139, 186980), (278, 93490), (556, 46745), (695, 37396), (1390, 18698), (2780, 9349)]