81540320

素因数分解:

$2^5\times 5^1\times {\mathrm{701}}^1\times {\mathrm{727}}^1$

素因数の和:1443

約数の個数: 48

約数和(自身を含む): 193179168

約数和(自身を除く): 111638848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 701, 727, 1402, 1454, 2804, 2908, 3505, 3635, 5608, 5816, 7010, 7270, 11216, 11632, 14020, 14540, 22432, 23264, 28040, 29080, 56080, 58160, 112160, 116320, 509627, 1019254, 2038508, 2548135, 4077016, 5096270, 8154032, 10192540, 16308064, 20385080, 40770160, 81540320]

約数ペア:

[(1, 81540320), (2, 40770160), (4, 20385080), (5, 16308064), (8, 10192540), (10, 8154032), (16, 5096270), (20, 4077016), (32, 2548135), (40, 2038508), (80, 1019254), (160, 509627), (701, 116320), (727, 112160), (1402, 58160), (1454, 56080), (2804, 29080), (2908, 28040), (3505, 23264), (3635, 22432), (5608, 14540), (5816, 14020), (7010, 11632), (7270, 11216)]