2543639

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:135

約数の個数: 24

約数和(自身を含む): 3223008

約数和(自身を除く): 679369

約数列:

[1, 7, 23, 37, 49, 61, 161, 259, 427, 851, 1127, 1403, 1813, 2257, 2989, 5957, 9821, 15799, 41699, 51911, 68747, 110593, 363377, 2543639]

約数ペア:

[(1, 2543639), (7, 363377), (23, 110593), (37, 68747), (49, 51911), (61, 41699), (161, 15799), (259, 9821), (427, 5957), (851, 2989), (1127, 2257), (1403, 1813)]