12792400

素因数分解:

$2^4\times 5^2\times {\mathrm{31981}}^1$

素因数の和:31999

約数の個数: 30

約数和(自身を含む): 30734702

約数和(自身を除く): 17942302

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 31981, 63962, 127924, 159905, 255848, 319810, 511696, 639620, 799525, 1279240, 1599050, 2558480, 3198100, 6396200, 12792400]

約数ペア:

[(1, 12792400), (2, 6396200), (4, 3198100), (5, 2558480), (8, 1599050), (10, 1279240), (16, 799525), (20, 639620), (25, 511696), (40, 319810), (50, 255848), (80, 159905), (100, 127924), (200, 63962), (400, 31981)]