21891441

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{4639}}^1$

素因数の和:4677

約数の個数: 24

約数和(自身を含む): 34558720

約数和(自身を除く): 12667279

約数列:

[1, 3, 11, 13, 33, 39, 121, 143, 363, 429, 1573, 4639, 4719, 13917, 51029, 60307, 153087, 180921, 561319, 663377, 1683957, 1990131, 7297147, 21891441]

約数ペア:

[(1, 21891441), (3, 7297147), (11, 1990131), (13, 1683957), (33, 663377), (39, 561319), (121, 180921), (143, 153087), (363, 60307), (429, 51029), (1573, 13917), (4639, 4719)]