1311344

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{1999}}^1$

素因数の和:2048

約数の個数: 20

約数和(自身を含む): 2604000

約数和(自身を除く): 1292656

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 1999, 3998, 7996, 15992, 31984, 81959, 163918, 327836, 655672, 1311344]

約数ペア:

[(1, 1311344), (2, 655672), (4, 327836), (8, 163918), (16, 81959), (41, 31984), (82, 15992), (164, 7996), (328, 3998), (656, 1999)]