21513447

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{593}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 32432400

約数和(自身を除く): 10918953

約数列:

[1, 3, 9, 29, 87, 139, 261, 417, 593, 1251, 1779, 4031, 5337, 12093, 17197, 36279, 51591, 82427, 154773, 247281, 741843, 2390383, 7171149, 21513447]

約数ペア:

[(1, 21513447), (3, 7171149), (9, 2390383), (29, 741843), (87, 247281), (139, 154773), (261, 82427), (417, 51591), (593, 36279), (1251, 17197), (1779, 12093), (4031, 5337)]