21063405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127657}}^1$

素因数の和:127676

約数の個数: 16

約数和(自身を含む): 36765504

約数和(自身を除く): 15702099

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 127657, 382971, 638285, 1404227, 1914855, 4212681, 7021135, 21063405]

約数ペア:

[(1, 21063405), (3, 7021135), (5, 4212681), (11, 1914855), (15, 1404227), (33, 638285), (55, 382971), (165, 127657)]