21810321

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1423}}^1$

素因数の和:1573

約数の個数: 24

約数和(自身を含む): 34210176

約数和(自身を除く): 12399855

約数列:

[1, 3, 9, 13, 39, 117, 131, 393, 1179, 1423, 1703, 4269, 5109, 12807, 15327, 18499, 55497, 166491, 186413, 559239, 1677717, 2423369, 7270107, 21810321]

約数ペア:

[(1, 21810321), (3, 7270107), (9, 2423369), (13, 1677717), (39, 559239), (117, 186413), (131, 166491), (393, 55497), (1179, 18499), (1423, 15327), (1703, 12807), (4269, 5109)]