17740989

素因数分解:

$3^2\times 7^4\times {\mathrm{821}}^1$

素因数の和:855

約数の個数: 30

約数和(自身を含む): 29931486

約数和(自身を除く): 12190497

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 821, 1029, 2401, 2463, 3087, 5747, 7203, 7389, 17241, 21609, 40229, 51723, 120687, 281603, 362061, 844809, 1971221, 2534427, 5913663, 17740989]

約数ペア:

[(1, 17740989), (3, 5913663), (7, 2534427), (9, 1971221), (21, 844809), (49, 362061), (63, 281603), (147, 120687), (343, 51723), (441, 40229), (821, 21609), (1029, 17241), (2401, 7389), (2463, 7203), (3087, 5747)]