18565520

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{971}}^1$

素因数の和:1223

約数の個数: 40

約数和(自身を含む): 43390080

約数和(自身を除く): 24824560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 971, 1195, 1912, 1942, 2390, 3824, 3884, 4780, 4855, 7768, 9560, 9710, 15536, 19120, 19420, 38840, 77680, 232069, 464138, 928276, 1160345, 1856552, 2320690, 3713104, 4641380, 9282760, 18565520]

約数ペア:

[(1, 18565520), (2, 9282760), (4, 4641380), (5, 3713104), (8, 2320690), (10, 1856552), (16, 1160345), (20, 928276), (40, 464138), (80, 232069), (239, 77680), (478, 38840), (956, 19420), (971, 19120), (1195, 15536), (1912, 9710), (1942, 9560), (2390, 7768), (3824, 4855), (3884, 4780)]