81572080

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{3877}}^1$

素因数の和:4153

約数の個数: 40

約数和(自身を含む): 190425312

約数和(自身を除く): 108853232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 526, 1052, 1315, 2104, 2630, 3877, 4208, 5260, 7754, 10520, 15508, 19385, 21040, 31016, 38770, 62032, 77540, 155080, 310160, 1019651, 2039302, 4078604, 5098255, 8157208, 10196510, 16314416, 20393020, 40786040, 81572080]

約数ペア:

[(1, 81572080), (2, 40786040), (4, 20393020), (5, 16314416), (8, 10196510), (10, 8157208), (16, 5098255), (20, 4078604), (40, 2039302), (80, 1019651), (263, 310160), (526, 155080), (1052, 77540), (1315, 62032), (2104, 38770), (2630, 31016), (3877, 21040), (4208, 19385), (5260, 15508), (7754, 10520)]