21467205

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6719}}^1$

素因数の和:6801

約数の個数: 24

約数和(自身を含む): 37739520

約数和(自身を除く): 16272315

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6719, 20157, 33595, 60471, 100785, 302355, 477049, 1431147, 2385245, 4293441, 7155735, 21467205]

約数ペア:

[(1, 21467205), (3, 7155735), (5, 4293441), (9, 2385245), (15, 1431147), (45, 477049), (71, 302355), (213, 100785), (355, 60471), (639, 33595), (1065, 20157), (3195, 6719)]