21998327

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:167

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 4612873

約数列:

[1, 13, 23, 29, 43, 59, 299, 377, 559, 667, 767, 989, 1247, 1357, 1711, 2537, 8671, 12857, 16211, 17641, 22243, 28681, 32981, 39353, 58351, 73573, 372853, 511589, 758563, 956449, 1692179, 21998327]

約数ペア:

[(1, 21998327), (13, 1692179), (23, 956449), (29, 758563), (43, 511589), (59, 372853), (299, 73573), (377, 58351), (559, 39353), (667, 32981), (767, 28681), (989, 22243), (1247, 17641), (1357, 16211), (1711, 12857), (2537, 8671)]