21994420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157103}}^1$

素因数の和:157119

約数の個数: 24

約数和(自身を含む): 52786944

約数和(自身を除く): 30792524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157103, 314206, 628412, 785515, 1099721, 1571030, 2199442, 3142060, 4398884, 5498605, 10997210, 21994420]

約数ペア:

[(1, 21994420), (2, 10997210), (4, 5498605), (5, 4398884), (7, 3142060), (10, 2199442), (14, 1571030), (20, 1099721), (28, 785515), (35, 628412), (70, 314206), (140, 157103)]