216965709

素因数分解:

$3^9\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:251

約数の個数: 40

約数和(自身を含む): 332085952

約数和(自身を除く): 115120243

約数列:

[1, 3, 9, 27, 73, 81, 151, 219, 243, 453, 657, 729, 1359, 1971, 2187, 4077, 5913, 6561, 11023, 12231, 17739, 19683, 33069, 36693, 53217, 99207, 110079, 159651, 297621, 330237, 478953, 892863, 990711, 1436859, 2678589, 2972133, 8035767, 24107301, 72321903, 216965709]

約数ペア:

[(1, 216965709), (3, 72321903), (9, 24107301), (27, 8035767), (73, 2972133), (81, 2678589), (151, 1436859), (219, 990711), (243, 892863), (453, 478953), (657, 330237), (729, 297621), (1359, 159651), (1971, 110079), (2187, 99207), (4077, 53217), (5913, 36693), (6561, 33069), (11023, 19683), (12231, 17739)]