19981195

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{4211}}^1$

素因数の和:4302

約数の個数: 16

約数和(自身を含む): 26181792

約数和(自身を除く): 6200597

約数列:

[1, 5, 13, 65, 73, 365, 949, 4211, 4745, 21055, 54743, 273715, 307403, 1537015, 3996239, 19981195]

約数ペア:

[(1, 19981195), (5, 3996239), (13, 1537015), (65, 307403), (73, 273715), (365, 54743), (949, 21055), (4211, 4745)]