17880149

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:273

約数の個数: 24

約数和(自身を含む): 21888000

約数和(自身を除く): 4007851

約数列:

[1, 7, 31, 49, 79, 149, 217, 553, 1043, 1519, 2449, 3871, 4619, 7301, 11771, 17143, 32333, 82397, 120001, 226331, 364901, 576779, 2554307, 17880149]

約数ペア:

[(1, 17880149), (7, 2554307), (31, 576779), (49, 364901), (79, 226331), (149, 120001), (217, 82397), (553, 32333), (1043, 17143), (1519, 11771), (2449, 7301), (3871, 4619)]