1800580

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{457}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 3808728

約数和(自身を除く): 2008148

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 457, 788, 914, 985, 1828, 1970, 2285, 3940, 4570, 9140, 90029, 180058, 360116, 450145, 900290, 1800580]

約数ペア:

[(1, 1800580), (2, 900290), (4, 450145), (5, 360116), (10, 180058), (20, 90029), (197, 9140), (394, 4570), (457, 3940), (788, 2285), (914, 1970), (985, 1828)]