20495727

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6379}}^1$

素因数の和:6412

約数の個数: 32

約数和(自身を含む): 36748800

約数和(自身を除く): 16253073

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6379, 19137, 44653, 57411, 108443, 133959, 172233, 325329, 401877, 759101, 975987, 1205631, 2277303, 2927961, 6831909, 20495727]

約数ペア:

[(1, 20495727), (3, 6831909), (7, 2927961), (9, 2277303), (17, 1205631), (21, 975987), (27, 759101), (51, 401877), (63, 325329), (119, 172233), (153, 133959), (189, 108443), (357, 57411), (459, 44653), (1071, 19137), (3213, 6379)]