8440400

素因数分解:

$2^4\times 5^2\times {\mathrm{21101}}^1$

素因数の和:21119

約数の個数: 30

約数和(自身を含む): 20279022

約数和(自身を除く): 11838622

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 21101, 42202, 84404, 105505, 168808, 211010, 337616, 422020, 527525, 844040, 1055050, 1688080, 2110100, 4220200, 8440400]

約数ペア:

[(1, 8440400), (2, 4220200), (4, 2110100), (5, 1688080), (8, 1055050), (10, 844040), (16, 527525), (20, 422020), (25, 337616), (40, 211010), (50, 168808), (80, 105505), (100, 84404), (200, 42202), (400, 21101)]