21498004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{15761}}^1$

素因数の和:15807

約数の個数: 24

約数和(自身を含む): 42368256

約数和(自身を除く): 20870252

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 682, 1364, 15761, 31522, 63044, 173371, 346742, 488591, 693484, 977182, 1954364, 5374501, 10749002, 21498004]

約数ペア:

[(1, 21498004), (2, 10749002), (4, 5374501), (11, 1954364), (22, 977182), (31, 693484), (44, 488591), (62, 346742), (124, 173371), (341, 63044), (682, 31522), (1364, 15761)]