19042919

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:375

約数の個数: 24

約数和(自身を含む): 23578848

約数和(自身を除く): 4535929

約数列:

[1, 7, 23, 49, 61, 161, 277, 427, 1127, 1403, 1939, 2989, 6371, 9821, 13573, 16897, 44597, 68747, 118279, 312179, 388631, 827953, 2720417, 19042919]

約数ペア:

[(1, 19042919), (7, 2720417), (23, 827953), (49, 388631), (61, 312179), (161, 118279), (277, 68747), (427, 44597), (1127, 16897), (1403, 13573), (1939, 9821), (2989, 6371)]