21088959

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{13339}}^1$

素因数の和:13390

約数の個数: 16

約数和(自身を含む): 30735360

約数和(自身を除く): 9646401

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 13339, 40017, 226763, 413509, 680289, 1240527, 7029653, 21088959]

約数ペア:

[(1, 21088959), (3, 7029653), (17, 1240527), (31, 680289), (51, 413509), (93, 226763), (527, 40017), (1581, 13339)]