21282855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128987}}^1$

素因数の和:129006

約数の個数: 16

約数和(自身を含む): 37148544

約数和(自身を除く): 15865689

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128987, 386961, 644935, 1418857, 1934805, 4256571, 7094285, 21282855]

約数ペア:

[(1, 21282855), (3, 7094285), (5, 4256571), (11, 1934805), (15, 1418857), (33, 644935), (55, 386961), (165, 128987)]