85456400

素因数分解:

$2^4\times 5^2\times {\mathrm{213641}}^1$

素因数の和:213659

約数の個数: 30

約数和(自身を含む): 205309962

約数和(自身を除く): 119853562

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 213641, 427282, 854564, 1068205, 1709128, 2136410, 3418256, 4272820, 5341025, 8545640, 10682050, 17091280, 21364100, 42728200, 85456400]

約数ペア:

[(1, 85456400), (2, 42728200), (4, 21364100), (5, 17091280), (8, 10682050), (10, 8545640), (16, 5341025), (20, 4272820), (25, 3418256), (40, 2136410), (50, 1709128), (80, 1068205), (100, 854564), (200, 427282), (400, 213641)]