20729228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20981}}^1$

素因数の和:21017

約数の個数: 24

約数和(自身を含む): 41124720

約数和(自身を除く): 20395492

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 20981, 41962, 83924, 272753, 398639, 545506, 797278, 1091012, 1594556, 5182307, 10364614, 20729228]

約数ペア:

[(1, 20729228), (2, 10364614), (4, 5182307), (13, 1594556), (19, 1091012), (26, 797278), (38, 545506), (52, 398639), (76, 272753), (247, 83924), (494, 41962), (988, 20981)]