21547779

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{4159}}^1$

素因数の和:4330

約数の個数: 16

約数和(自身を含む): 31549440

約数和(自身を除く): 10001661

約数列:

[1, 3, 11, 33, 157, 471, 1727, 4159, 5181, 12477, 45749, 137247, 652963, 1958889, 7182593, 21547779]

約数ペア:

[(1, 21547779), (3, 7182593), (11, 1958889), (33, 652963), (157, 137247), (471, 45749), (1727, 12477), (4159, 5181)]