21738140

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{8297}}^1$

素因数の和:8437

約数の個数: 24

約数和(自身を含む): 46004112

約数和(自身を除く): 24265972

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 8297, 16594, 33188, 41485, 82970, 165940, 1086907, 2173814, 4347628, 5434535, 10869070, 21738140]

約数ペア:

[(1, 21738140), (2, 10869070), (4, 5434535), (5, 4347628), (10, 2173814), (20, 1086907), (131, 165940), (262, 82970), (524, 41485), (655, 33188), (1310, 16594), (2620, 8297)]