21604780

素因数分解:

$2^2\times 5^1\times {\mathrm{757}}^1\times {\mathrm{1427}}^1$

素因数の和:2193

約数の個数: 24

約数和(自身を含む): 45461808

約数和(自身を除く): 23857028

約数列:

[1, 2, 4, 5, 10, 20, 757, 1427, 1514, 2854, 3028, 3785, 5708, 7135, 7570, 14270, 15140, 28540, 1080239, 2160478, 4320956, 5401195, 10802390, 21604780]

約数ペア:

[(1, 21604780), (2, 10802390), (4, 5401195), (5, 4320956), (10, 2160478), (20, 1080239), (757, 28540), (1427, 15140), (1514, 14270), (2854, 7570), (3028, 7135), (3785, 5708)]