19898749

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1091}}^1$

素因数の和:1188

約数の個数: 16

約数和(自身を含む): 22748544

約数和(自身を除く): 2849795

約数列:

[1, 13, 23, 61, 299, 793, 1091, 1403, 14183, 18239, 25093, 66551, 326209, 865163, 1530673, 19898749]

約数ペア:

[(1, 19898749), (13, 1530673), (23, 865163), (61, 326209), (299, 66551), (793, 25093), (1091, 18239), (1403, 14183)]