628400

素因数分解:

$2^4\times 5^2\times {\mathrm{1571}}^1$

素因数の和:1589

約数の個数: 30

約数和(自身を含む): 1510692

約数和(自身を除く): 882292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 1571, 3142, 6284, 7855, 12568, 15710, 25136, 31420, 39275, 62840, 78550, 125680, 157100, 314200, 628400]

約数ペア:

[(1, 628400), (2, 314200), (4, 157100), (5, 125680), (8, 78550), (10, 62840), (16, 39275), (20, 31420), (25, 25136), (40, 15710), (50, 12568), (80, 7855), (100, 6284), (200, 3142), (400, 1571)]