20992828

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{2143}}^1$

素因数の和:2257

約数の個数: 24

約数和(自身を含む): 38420480

約数和(自身を除く): 17427652

約数列:

[1, 2, 4, 31, 62, 79, 124, 158, 316, 2143, 2449, 4286, 4898, 8572, 9796, 66433, 132866, 169297, 265732, 338594, 677188, 5248207, 10496414, 20992828]

約数ペア:

[(1, 20992828), (2, 10496414), (4, 5248207), (31, 677188), (62, 338594), (79, 265732), (124, 169297), (158, 132866), (316, 66433), (2143, 9796), (2449, 8572), (4286, 4898)]