21082269

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{3889}}^1$

素因数の和:4044

約数の個数: 16

約数和(自身を含む): 30497600

約数和(自身を除く): 9415331

約数列:

[1, 3, 13, 39, 139, 417, 1807, 3889, 5421, 11667, 50557, 151671, 540571, 1621713, 7027423, 21082269]

約数ペア:

[(1, 21082269), (3, 7027423), (13, 1621713), (39, 540571), (139, 151671), (417, 50557), (1807, 11667), (3889, 5421)]