258800

素因数分解:

$2^4\times 5^2\times {\mathrm{647}}^1$

素因数の和:665

約数の個数: 30

約数和(自身を含む): 622728

約数和(自身を除く): 363928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 647, 1294, 2588, 3235, 5176, 6470, 10352, 12940, 16175, 25880, 32350, 51760, 64700, 129400, 258800]

約数ペア:

[(1, 258800), (2, 129400), (4, 64700), (5, 51760), (8, 32350), (10, 25880), (16, 16175), (20, 12940), (25, 10352), (40, 6470), (50, 5176), (80, 3235), (100, 2588), (200, 1294), (400, 647)]