21167415

素因数分解:

$3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2719}}^1$

素因数の和:2903

約数の個数: 24

約数和(自身を含む): 36915840

約数和(自身を除く): 15748425

約数列:

[1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2595, 2719, 7785, 8157, 13595, 24471, 40785, 122355, 470387, 1411161, 2351935, 4233483, 7055805, 21167415]

約数ペア:

[(1, 21167415), (3, 7055805), (5, 4233483), (9, 2351935), (15, 1411161), (45, 470387), (173, 122355), (519, 40785), (865, 24471), (1557, 13595), (2595, 8157), (2719, 7785)]