21198674

素因数分解:

$2^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{1087}}^1$

素因数の和:1302

約数の個数: 24

約数和(自身を含む): 37209600

約数和(自身を除く): 16010926

約数列:

[1, 2, 7, 14, 49, 98, 199, 398, 1087, 1393, 2174, 2786, 7609, 9751, 15218, 19502, 53263, 106526, 216313, 432626, 1514191, 3028382, 10599337, 21198674]

約数ペア:

[(1, 21198674), (2, 10599337), (7, 3028382), (14, 1514191), (49, 432626), (98, 216313), (199, 106526), (398, 53263), (1087, 19502), (1393, 15218), (2174, 9751), (2786, 7609)]