81336400

素因数分解:

$2^4\times 5^2\times {\mathrm{203341}}^1$

素因数の和:203359

約数の個数: 30

約数和(自身を含む): 195411662

約数和(自身を除く): 114075262

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 203341, 406682, 813364, 1016705, 1626728, 2033410, 3253456, 4066820, 5083525, 8133640, 10167050, 16267280, 20334100, 40668200, 81336400]

約数ペア:

[(1, 81336400), (2, 40668200), (4, 20334100), (5, 16267280), (8, 10167050), (10, 8133640), (16, 5083525), (20, 4066820), (25, 3253456), (40, 2033410), (50, 1626728), (80, 1016705), (100, 813364), (200, 406682), (400, 203341)]