20979148

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{229}}^1\times {\mathrm{619}}^1$

素因数の和:889

約数の個数: 24

約数和(自身を含む): 37931600

約数和(自身を除く): 16952452

約数列:

[1, 2, 4, 37, 74, 148, 229, 458, 619, 916, 1238, 2476, 8473, 16946, 22903, 33892, 45806, 91612, 141751, 283502, 567004, 5244787, 10489574, 20979148]

約数ペア:

[(1, 20979148), (2, 10489574), (4, 5244787), (37, 567004), (74, 283502), (148, 141751), (229, 91612), (458, 45806), (619, 33892), (916, 22903), (1238, 16946), (2476, 8473)]