20620540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25147}}^1$

素因数の和:25197

約数の個数: 24

約数和(自身を含む): 44361072

約数和(自身を除く): 23740532

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25147, 50294, 100588, 125735, 251470, 502940, 1031027, 2062054, 4124108, 5155135, 10310270, 20620540]

約数ペア:

[(1, 20620540), (2, 10310270), (4, 5155135), (5, 4124108), (10, 2062054), (20, 1031027), (41, 502940), (82, 251470), (164, 125735), (205, 100588), (410, 50294), (820, 25147)]