81668447

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{307}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 97962480

約数和(自身を除く): 16294033

約数列:

[1, 7, 49, 61, 89, 307, 427, 623, 2149, 2989, 4361, 5429, 15043, 18727, 27323, 38003, 131089, 191261, 266021, 917623, 1338827, 1666703, 11666921, 81668447]

約数ペア:

[(1, 81668447), (7, 11666921), (49, 1666703), (61, 1338827), (89, 917623), (307, 266021), (427, 191261), (623, 131089), (2149, 38003), (2989, 27323), (4361, 18727), (5429, 15043)]