20745277

素因数分解:

$7^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 25116480

約数和(自身を除く): 4371203

約数列:

[1, 7, 49, 67, 71, 89, 469, 497, 623, 3283, 3479, 4361, 4757, 5963, 6319, 33299, 41741, 44233, 233093, 292187, 309631, 423373, 2963611, 20745277]

約数ペア:

[(1, 20745277), (7, 2963611), (49, 423373), (67, 309631), (71, 292187), (89, 233093), (469, 44233), (497, 41741), (623, 33299), (3283, 6319), (3479, 5963), (4361, 4757)]