78805181

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{641}}^1$

素因数の和:861

約数の個数: 24

約数和(自身を含む): 99389304

約数和(自身を除く): 20584123

約数列:

[1, 7, 13, 49, 91, 193, 637, 641, 1351, 2509, 4487, 8333, 9457, 17563, 31409, 58331, 122941, 123713, 408317, 865991, 1608269, 6061937, 11257883, 78805181]

約数ペア:

[(1, 78805181), (7, 11257883), (13, 6061937), (49, 1608269), (91, 865991), (193, 408317), (637, 123713), (641, 122941), (1351, 58331), (2509, 31409), (4487, 17563), (8333, 9457)]