2540223

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:735

約数の個数: 24

約数和(自身を含む): 4268576

約数和(自身を除く): 1728353

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 661, 1281, 1983, 3843, 4627, 5949, 13881, 40321, 41643, 120963, 282247, 362889, 846741, 2540223]

約数ペア:

[(1, 2540223), (3, 846741), (7, 362889), (9, 282247), (21, 120963), (61, 41643), (63, 40321), (183, 13881), (427, 5949), (549, 4627), (661, 3843), (1281, 1983)]