28735420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{205253}}^1$

素因数の和:205269

約数の個数: 24

約数和(自身を含む): 68965344

約数和(自身を除く): 40229924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 205253, 410506, 821012, 1026265, 1436771, 2052530, 2873542, 4105060, 5747084, 7183855, 14367710, 28735420]

約数ペア:

[(1, 28735420), (2, 14367710), (4, 7183855), (5, 5747084), (7, 4105060), (10, 2873542), (14, 2052530), (20, 1436771), (28, 1026265), (35, 821012), (70, 410506), (140, 205253)]