21178107

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1427}}^1$

素因数の和:1547

約数の個数: 24

約数和(自身を含む): 32746896

約数和(自身を除く): 11568789

約数列:

[1, 3, 9, 17, 51, 97, 153, 291, 873, 1427, 1649, 4281, 4947, 12843, 14841, 24259, 72777, 138419, 218331, 415257, 1245771, 2353123, 7059369, 21178107]

約数ペア:

[(1, 21178107), (3, 7059369), (9, 2353123), (17, 1245771), (51, 415257), (97, 218331), (153, 138419), (291, 72777), (873, 24259), (1427, 14841), (1649, 12843), (4281, 4947)]