81912005

素因数分解:

$5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 114912000

約数和(自身を除く): 32999995

約数列:

[1, 5, 7, 35, 113, 139, 149, 565, 695, 745, 791, 973, 1043, 3955, 4865, 5215, 15707, 16837, 20711, 78535, 84185, 103555, 109949, 117859, 144977, 549745, 589295, 724885, 2340343, 11701715, 16382401, 81912005]

約数ペア:

[(1, 81912005), (5, 16382401), (7, 11701715), (35, 2340343), (113, 724885), (139, 589295), (149, 549745), (565, 144977), (695, 117859), (745, 109949), (791, 103555), (973, 84185), (1043, 78535), (3955, 20711), (4865, 16837), (5215, 15707)]