2040400

素因数分解:

$2^4\times 5^2\times {\mathrm{5101}}^1$

素因数の和:5119

約数の個数: 30

約数和(自身を含む): 4903022

約数和(自身を除く): 2862622

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 5101, 10202, 20404, 25505, 40808, 51010, 81616, 102020, 127525, 204040, 255050, 408080, 510100, 1020200, 2040400]

約数ペア:

[(1, 2040400), (2, 1020200), (4, 510100), (5, 408080), (8, 255050), (10, 204040), (16, 127525), (20, 102020), (25, 81616), (40, 51010), (50, 40808), (80, 25505), (100, 20404), (200, 10202), (400, 5101)]