1287990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1301}}^1$

素因数の和:1325

約数の個数: 48

約数和(自身を含む): 3656016

約数和(自身を除く): 2368026

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 1301, 2602, 3903, 6505, 7806, 11709, 13010, 14311, 19515, 23418, 28622, 39030, 42933, 58545, 71555, 85866, 117090, 128799, 143110, 214665, 257598, 429330, 643995, 1287990]

約数ペア:

[(1, 1287990), (2, 643995), (3, 429330), (5, 257598), (6, 214665), (9, 143110), (10, 128799), (11, 117090), (15, 85866), (18, 71555), (22, 58545), (30, 42933), (33, 39030), (45, 28622), (55, 23418), (66, 19515), (90, 14311), (99, 13010), (110, 11709), (165, 7806), (198, 6505), (330, 3903), (495, 2602), (990, 1301)]