19901206

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{9689}}^1$

素因数の和:9783

約数の個数: 16

約数和(自身を含む): 32558400

約数和(自身を除く): 12657194

約数列:

[1, 2, 13, 26, 79, 158, 1027, 2054, 9689, 19378, 125957, 251914, 765431, 1530862, 9950603, 19901206]

約数ペア:

[(1, 19901206), (2, 9950603), (13, 1530862), (26, 765431), (79, 251914), (158, 125957), (1027, 19378), (2054, 9689)]