21000921618

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{5881}}^1\times {\mathrm{13841}}^1$

素因数の和:19770

約数の個数: 32

約数和(自身を含む): 42989044032

約数和(自身を除く): 21988122414

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 5881, 11762, 13841, 17643, 27682, 35286, 41523, 83046, 252883, 505766, 595163, 758649, 1190326, 1517298, 1785489, 3570978, 81398921, 162797842, 244196763, 488393526, 3500153603, 7000307206, 10500460809, 21000921618]

約数ペア:

[(1, 21000921618), (2, 10500460809), (3, 7000307206), (6, 3500153603), (43, 488393526), (86, 244196763), (129, 162797842), (258, 81398921), (5881, 3570978), (11762, 1785489), (13841, 1517298), (17643, 1190326), (27682, 758649), (35286, 595163), (41523, 505766), (83046, 252883)]