64873240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{37717}}^1$

素因数の和:37771

約数の個数: 32

約数和(自身を含む): 149363280

約数和(自身を除く): 84490040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 37717, 75434, 150868, 188585, 301736, 377170, 754340, 1508680, 1621831, 3243662, 6487324, 8109155, 12974648, 16218310, 32436620, 64873240]

約数ペア:

[(1, 64873240), (2, 32436620), (4, 16218310), (5, 12974648), (8, 8109155), (10, 6487324), (20, 3243662), (40, 1621831), (43, 1508680), (86, 754340), (172, 377170), (215, 301736), (344, 188585), (430, 150868), (860, 75434), (1720, 37717)]