81931129

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{4007}}^1$

素因数の和:4164

約数の個数: 16

約数和(自身を含む): 98500608

約数和(自身を除く): 16569479

約数列:

[1, 7, 23, 127, 161, 889, 2921, 4007, 20447, 28049, 92161, 508889, 645127, 3562223, 11704447, 81931129]

約数ペア:

[(1, 81931129), (7, 11704447), (23, 3562223), (127, 645127), (161, 508889), (889, 92161), (2921, 28049), (4007, 20447)]