19899580

素因数分解:

$2^2\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1097}}^1$

素因数の和:2013

約数の個数: 24

約数和(自身を含む): 41873328

約数和(自身を除く): 21973748

約数列:

[1, 2, 4, 5, 10, 20, 907, 1097, 1814, 2194, 3628, 4388, 4535, 5485, 9070, 10970, 18140, 21940, 994979, 1989958, 3979916, 4974895, 9949790, 19899580]

約数ペア:

[(1, 19899580), (2, 9949790), (4, 4974895), (5, 3979916), (10, 1989958), (20, 994979), (907, 21940), (1097, 18140), (1814, 10970), (2194, 9070), (3628, 5485), (4388, 4535)]