856400

素因数分解:

$2^4\times 5^2\times {\mathrm{2141}}^1$

素因数の和:2159

約数の個数: 30

約数和(自身を含む): 2058462

約数和(自身を除く): 1202062

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 2141, 4282, 8564, 10705, 17128, 21410, 34256, 42820, 53525, 85640, 107050, 171280, 214100, 428200, 856400]

約数ペア:

[(1, 856400), (2, 428200), (4, 214100), (5, 171280), (8, 107050), (10, 85640), (16, 53525), (20, 42820), (25, 34256), (40, 21410), (50, 17128), (80, 10705), (100, 8564), (200, 4282), (400, 2141)]