21381135

素因数分解:

$3^1\times 5^1\times {\mathrm{887}}^1\times {\mathrm{1607}}^1$

素因数の和:2502

約数の個数: 16

約数和(自身を含む): 34269696

約数和(自身を除く): 12888561

約数列:

[1, 3, 5, 15, 887, 1607, 2661, 4435, 4821, 8035, 13305, 24105, 1425409, 4276227, 7127045, 21381135]

約数ペア:

[(1, 21381135), (3, 7127045), (5, 4276227), (15, 1425409), (887, 24105), (1607, 13305), (2661, 8035), (4435, 4821)]