20755420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21179}}^1$

素因数の和:21202

約数の個数: 36

約数和(自身を含む): 50704920

約数和(自身を除く): 29949500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21179, 42358, 84716, 105895, 148253, 211790, 296506, 423580, 593012, 741265, 1037771, 1482530, 2075542, 2965060, 4151084, 5188855, 10377710, 20755420]

約数ペア:

[(1, 20755420), (2, 10377710), (4, 5188855), (5, 4151084), (7, 2965060), (10, 2075542), (14, 1482530), (20, 1037771), (28, 741265), (35, 593012), (49, 423580), (70, 296506), (98, 211790), (140, 148253), (196, 105895), (245, 84716), (490, 42358), (980, 21179)]