212013207

素因数分解:

$3^4\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1879}}^1$

素因数の和:2097

約数の個数: 40

約数和(自身を含む): 363968000

約数和(自身を除く): 151954793

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 199, 567, 597, 1393, 1791, 1879, 4179, 5373, 5637, 12537, 13153, 16119, 16911, 37611, 39459, 50733, 112833, 118377, 152199, 355131, 373921, 1065393, 1121763, 2617447, 3365289, 7852341, 10095867, 23557023, 30287601, 70671069, 212013207]

約数ペア:

[(1, 212013207), (3, 70671069), (7, 30287601), (9, 23557023), (21, 10095867), (27, 7852341), (63, 3365289), (81, 2617447), (189, 1121763), (199, 1065393), (567, 373921), (597, 355131), (1393, 152199), (1791, 118377), (1879, 112833), (4179, 50733), (5373, 39459), (5637, 37611), (12537, 16911), (13153, 16119)]