18766216

素因数分解:

$2^3\times 7^4\times {\mathrm{977}}^1$

素因数の和:1011

約数の個数: 40

約数和(自身を含む): 41090670

約数和(自身を除く): 22324454

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 977, 1372, 1954, 2401, 2744, 3908, 4802, 6839, 7816, 9604, 13678, 19208, 27356, 47873, 54712, 95746, 191492, 335111, 382984, 670222, 1340444, 2345777, 2680888, 4691554, 9383108, 18766216]

約数ペア:

[(1, 18766216), (2, 9383108), (4, 4691554), (7, 2680888), (8, 2345777), (14, 1340444), (28, 670222), (49, 382984), (56, 335111), (98, 191492), (196, 95746), (343, 54712), (392, 47873), (686, 27356), (977, 19208), (1372, 13678), (1954, 9604), (2401, 7816), (2744, 6839), (3908, 4802)]