25720400

素因数分解:

$2^4\times 5^2\times {\mathrm{64301}}^1$

素因数の和:64319

約数の個数: 30

約数和(自身を含む): 61794222

約数和(自身を除く): 36073822

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 64301, 128602, 257204, 321505, 514408, 643010, 1028816, 1286020, 1607525, 2572040, 3215050, 5144080, 6430100, 12860200, 25720400]

約数ペア:

[(1, 25720400), (2, 12860200), (4, 6430100), (5, 5144080), (8, 3215050), (10, 2572040), (16, 1607525), (20, 1286020), (25, 1028816), (40, 643010), (50, 514408), (80, 321505), (100, 257204), (200, 128602), (400, 64301)]