19997626

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{39521}}^1$

素因数の和:39557

約数の個数: 16

約数和(自身を含む): 34147008

約数和(自身を除く): 14149382

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 39521, 79042, 434731, 869462, 908983, 1817966, 9998813, 19997626]

約数ペア:

[(1, 19997626), (2, 9998813), (11, 1817966), (22, 908983), (23, 869462), (46, 434731), (253, 79042), (506, 39521)]