19711391

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{641}}^1$

素因数の和:862

約数の個数: 16

約数和(自身を含む): 23666688

約数和(自身を除く): 3955297

約数列:

[1, 7, 23, 161, 191, 641, 1337, 4393, 4487, 14743, 30751, 103201, 122431, 857017, 2815913, 19711391]

約数ペア:

[(1, 19711391), (7, 2815913), (23, 857017), (161, 122431), (191, 103201), (641, 30751), (1337, 14743), (4393, 4487)]