126516400

素因数分解:

$2^4\times 5^2\times {\mathrm{316291}}^1$

素因数の和:316309

約数の個数: 30

約数和(自身を含む): 303956612

約数和(自身を除く): 177440212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 316291, 632582, 1265164, 1581455, 2530328, 3162910, 5060656, 6325820, 7907275, 12651640, 15814550, 25303280, 31629100, 63258200, 126516400]

約数ペア:

[(1, 126516400), (2, 63258200), (4, 31629100), (5, 25303280), (8, 15814550), (10, 12651640), (16, 7907275), (20, 6325820), (25, 5060656), (40, 3162910), (50, 2530328), (80, 1581455), (100, 1265164), (200, 632582), (400, 316291)]