1891988

素因数分解:

$2^2\times 7^4\times {\mathrm{197}}^1$

素因数の和:229

約数の個数: 30

約数和(自身を含む): 3882186

約数和(自身を除く): 1990198

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 197, 343, 394, 686, 788, 1372, 1379, 2401, 2758, 4802, 5516, 9604, 9653, 19306, 38612, 67571, 135142, 270284, 472997, 945994, 1891988]

約数ペア:

[(1, 1891988), (2, 945994), (4, 472997), (7, 270284), (14, 135142), (28, 67571), (49, 38612), (98, 19306), (196, 9653), (197, 9604), (343, 5516), (394, 4802), (686, 2758), (788, 2401), (1372, 1379)]