20612120

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2053}}^1$

素因数の和:2315

約数の個数: 32

約数和(自身を含む): 46584720

約数和(自身を除く): 25972600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2053, 2510, 4106, 5020, 8212, 10040, 10265, 16424, 20530, 41060, 82120, 515303, 1030606, 2061212, 2576515, 4122424, 5153030, 10306060, 20612120]

約数ペア:

[(1, 20612120), (2, 10306060), (4, 5153030), (5, 4122424), (8, 2576515), (10, 2061212), (20, 1030606), (40, 515303), (251, 82120), (502, 41060), (1004, 20530), (1255, 16424), (2008, 10265), (2053, 10040), (2510, 8212), (4106, 5020)]