21221661

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{9677}}^1$

素因数の和:9740

約数の個数: 16

約数和(自身を含む): 30659904

約数和(自身を除く): 9438243

約数列:

[1, 3, 17, 43, 51, 129, 731, 2193, 9677, 29031, 164509, 416111, 493527, 1248333, 7073887, 21221661]

約数ペア:

[(1, 21221661), (3, 7073887), (17, 1248333), (43, 493527), (51, 416111), (129, 164509), (731, 29031), (2193, 9677)]