28721415

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{691}}^1$

素因数の和:879

約数の個数: 32

約数和(自身を含む): 49026816

約数和(自身を除く): 20305401

約数列:

[1, 3, 5, 15, 17, 51, 85, 163, 255, 489, 691, 815, 2073, 2445, 2771, 3455, 8313, 10365, 11747, 13855, 35241, 41565, 58735, 112633, 176205, 337899, 563165, 1689495, 1914761, 5744283, 9573805, 28721415]

約数ペア:

[(1, 28721415), (3, 9573805), (5, 5744283), (15, 1914761), (17, 1689495), (51, 563165), (85, 337899), (163, 176205), (255, 112633), (489, 58735), (691, 41565), (815, 35241), (2073, 13855), (2445, 11747), (2771, 10365), (3455, 8313)]