19685978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{7351}}^1$

素因数の和:7469

約数の個数: 16

約数和(自身を含む): 32113536

約数和(自身を除く): 12427558

約数列:

[1, 2, 13, 26, 103, 206, 1339, 2678, 7351, 14702, 95563, 191126, 757153, 1514306, 9842989, 19685978]

約数ペア:

[(1, 19685978), (2, 9842989), (13, 1514306), (26, 757153), (103, 191126), (206, 95563), (1339, 14702), (2678, 7351)]