81135500

素因数分解:

$2^2\times 5^3\times {\mathrm{263}}^1\times {\mathrm{617}}^1$

素因数の和:899

約数の個数: 48

約数和(自身を含む): 178161984

約数和(自身を除く): 97026484

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 263, 500, 526, 617, 1052, 1234, 1315, 2468, 2630, 3085, 5260, 6170, 6575, 12340, 13150, 15425, 26300, 30850, 32875, 61700, 65750, 77125, 131500, 154250, 162271, 308500, 324542, 649084, 811355, 1622710, 3245420, 4056775, 8113550, 16227100, 20283875, 40567750, 81135500]

約数ペア:

[(1, 81135500), (2, 40567750), (4, 20283875), (5, 16227100), (10, 8113550), (20, 4056775), (25, 3245420), (50, 1622710), (100, 811355), (125, 649084), (250, 324542), (263, 308500), (500, 162271), (526, 154250), (617, 131500), (1052, 77125), (1234, 65750), (1315, 61700), (2468, 32875), (2630, 30850), (3085, 26300), (5260, 15425), (6170, 13150), (6575, 12340)]