64684040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{37607}}^1$

素因数の和:37661

約数の個数: 32

約数和(自身を含む): 148927680

約数和(自身を除く): 84243640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 37607, 75214, 150428, 188035, 300856, 376070, 752140, 1504280, 1617101, 3234202, 6468404, 8085505, 12936808, 16171010, 32342020, 64684040]

約数ペア:

[(1, 64684040), (2, 32342020), (4, 16171010), (5, 12936808), (8, 8085505), (10, 6468404), (20, 3234202), (40, 1617101), (43, 1504280), (86, 752140), (172, 376070), (215, 300856), (344, 188035), (430, 150428), (860, 75214), (1720, 37607)]