20197107

素因数分解:

$3^4\times 7^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:397

約数の個数: 40

約数和(自身を含む): 34848000

約数和(自身を除く): 14650893

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 179, 189, 199, 537, 567, 597, 1253, 1393, 1611, 1791, 3759, 4179, 4833, 5373, 11277, 12537, 14499, 16119, 33831, 35621, 37611, 101493, 106863, 112833, 249347, 320589, 748041, 961767, 2244123, 2885301, 6732369, 20197107]

約数ペア:

[(1, 20197107), (3, 6732369), (7, 2885301), (9, 2244123), (21, 961767), (27, 748041), (63, 320589), (81, 249347), (179, 112833), (189, 106863), (199, 101493), (537, 37611), (567, 35621), (597, 33831), (1253, 16119), (1393, 14499), (1611, 12537), (1791, 11277), (3759, 5373), (4179, 4833)]