25980400

素因数分解:

$2^4\times 5^2\times {\mathrm{64951}}^1$

素因数の和:64969

約数の個数: 30

約数和(自身を含む): 62418872

約数和(自身を除く): 36438472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 64951, 129902, 259804, 324755, 519608, 649510, 1039216, 1299020, 1623775, 2598040, 3247550, 5196080, 6495100, 12990200, 25980400]

約数ペア:

[(1, 25980400), (2, 12990200), (4, 6495100), (5, 5196080), (8, 3247550), (10, 2598040), (16, 1623775), (20, 1299020), (25, 1039216), (40, 649510), (50, 519608), (80, 324755), (100, 259804), (200, 129902), (400, 64951)]