21540795

素因数分解:

$3^1\times 5^1\times {\mathrm{887}}^1\times {\mathrm{1619}}^1$

素因数の和:2514

約数の個数: 16

約数和(自身を含む): 34525440

約数和(自身を除く): 12984645

約数列:

[1, 3, 5, 15, 887, 1619, 2661, 4435, 4857, 8095, 13305, 24285, 1436053, 4308159, 7180265, 21540795]

約数ペア:

[(1, 21540795), (3, 7180265), (5, 4308159), (15, 1436053), (887, 24285), (1619, 13305), (2661, 8095), (4435, 4857)]