21204638

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{443}}^1$

素因数の和:728

約数の個数: 32

約数和(自身を含む): 39384576

約数和(自身を除く): 18179938

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 263, 443, 526, 886, 1841, 3101, 3419, 3682, 5759, 6202, 6838, 11518, 23933, 40313, 47866, 80626, 116509, 233018, 815563, 1514617, 1631126, 3029234, 10602319, 21204638]

約数ペア:

[(1, 21204638), (2, 10602319), (7, 3029234), (13, 1631126), (14, 1514617), (26, 815563), (91, 233018), (182, 116509), (263, 80626), (443, 47866), (526, 40313), (886, 23933), (1841, 11518), (3101, 6838), (3419, 6202), (3682, 5759)]