78508400

素因数分解:

$2^4\times 5^2\times {\mathrm{196271}}^1$

素因数の和:196289

約数の個数: 30

約数和(自身を含む): 188617392

約数和(自身を除く): 110108992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 196271, 392542, 785084, 981355, 1570168, 1962710, 3140336, 3925420, 4906775, 7850840, 9813550, 15701680, 19627100, 39254200, 78508400]

約数ペア:

[(1, 78508400), (2, 39254200), (4, 19627100), (5, 15701680), (8, 9813550), (10, 7850840), (16, 4906775), (20, 3925420), (25, 3140336), (40, 1962710), (50, 1570168), (80, 981355), (100, 785084), (200, 392542), (400, 196271)]