18904580

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1697}}^1$

素因数の和:2263

約数の個数: 24

約数和(自身を含む): 39794328

約数和(自身を除く): 20889748

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 1697, 2228, 2785, 3394, 5570, 6788, 8485, 11140, 16970, 33940, 945229, 1890458, 3780916, 4726145, 9452290, 18904580]

約数ペア:

[(1, 18904580), (2, 9452290), (4, 4726145), (5, 3780916), (10, 1890458), (20, 945229), (557, 33940), (1114, 16970), (1697, 11140), (2228, 8485), (2785, 6788), (3394, 5570)]