21568653

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{353}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 33530880

約数和(自身を除く): 11962227

約数列:

[1, 3, 9, 27, 31, 73, 93, 219, 279, 353, 657, 837, 1059, 1971, 2263, 3177, 6789, 9531, 10943, 20367, 25769, 32829, 61101, 77307, 98487, 231921, 295461, 695763, 798839, 2396517, 7189551, 21568653]

約数ペア:

[(1, 21568653), (3, 7189551), (9, 2396517), (27, 798839), (31, 695763), (73, 295461), (93, 231921), (219, 98487), (279, 77307), (353, 61101), (657, 32829), (837, 25769), (1059, 20367), (1971, 10943), (2263, 9531), (3177, 6789)]