21123263

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 25784064

約数和(自身を除く): 4660801

約数列:

[1, 7, 37, 49, 61, 191, 259, 427, 1337, 1813, 2257, 2989, 7067, 9359, 11651, 15799, 49469, 81557, 110593, 346283, 431087, 570899, 3017609, 21123263]

約数ペア:

[(1, 21123263), (7, 3017609), (37, 570899), (49, 431087), (61, 346283), (191, 110593), (259, 81557), (427, 49469), (1337, 15799), (1813, 11651), (2257, 9359), (2989, 7067)]