198901381

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{9721}}^1$

素因数の和:9844

約数の個数: 16

約数和(自身を含む): 236439040

約数和(自身を除く): 37537659

約数列:

[1, 7, 37, 79, 259, 553, 2923, 9721, 20461, 68047, 359677, 767959, 2517739, 5375713, 28414483, 198901381]

約数ペア:

[(1, 198901381), (7, 28414483), (37, 5375713), (79, 2517739), (259, 767959), (553, 359677), (2923, 68047), (9721, 20461)]