21654616

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{87317}}^1$

素因数の和:87354

約数の個数: 16

約数和(自身を含む): 41912640

約数和(自身を除く): 20258024

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 87317, 174634, 349268, 698536, 2706827, 5413654, 10827308, 21654616]

約数ペア:

[(1, 21654616), (2, 10827308), (4, 5413654), (8, 2706827), (31, 698536), (62, 349268), (124, 174634), (248, 87317)]