19899593

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{953}}^1$

素因数の和:1136

約数の個数: 16

約数和(自身を含む): 24117120

約数和(自身を除く): 4217527

約数列:

[1, 7, 19, 133, 157, 953, 1099, 2983, 6671, 18107, 20881, 126749, 149621, 1047347, 2842799, 19899593]

約数ペア:

[(1, 19899593), (7, 2842799), (19, 1047347), (133, 149621), (157, 126749), (953, 20881), (1099, 18107), (2983, 6671)]