129156400

素因数分解:

$2^4\times 5^2\times {\mathrm{322891}}^1$

素因数の和:322909

約数の個数: 30

約数和(自身を含む): 310299212

約数和(自身を除く): 181142812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 322891, 645782, 1291564, 1614455, 2583128, 3228910, 5166256, 6457820, 8072275, 12915640, 16144550, 25831280, 32289100, 64578200, 129156400]

約数ペア:

[(1, 129156400), (2, 64578200), (4, 32289100), (5, 25831280), (8, 16144550), (10, 12915640), (16, 8072275), (20, 6457820), (25, 5166256), (40, 3228910), (50, 2583128), (80, 1614455), (100, 1291564), (200, 645782), (400, 322891)]