18521480

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{6911}}^1$

素因数の和:6989

約数の個数: 32

約数和(自身を含む): 42301440

約数和(自身を除く): 23779960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 6911, 13822, 27644, 34555, 55288, 69110, 138220, 276440, 463037, 926074, 1852148, 2315185, 3704296, 4630370, 9260740, 18521480]

約数ペア:

[(1, 18521480), (2, 9260740), (4, 4630370), (5, 3704296), (8, 2315185), (10, 1852148), (20, 926074), (40, 463037), (67, 276440), (134, 138220), (268, 69110), (335, 55288), (536, 34555), (670, 27644), (1340, 13822), (2680, 6911)]