21175420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151253}}^1$

素因数の和:151269

約数の個数: 24

約数和(自身を含む): 50821344

約数和(自身を除く): 29645924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151253, 302506, 605012, 756265, 1058771, 1512530, 2117542, 3025060, 4235084, 5293855, 10587710, 21175420]

約数ペア:

[(1, 21175420), (2, 10587710), (4, 5293855), (5, 4235084), (7, 3025060), (10, 2117542), (14, 1512530), (20, 1058771), (28, 756265), (35, 605012), (70, 302506), (140, 151253)]