19856956

素因数分解:

$2^2\times 7^3\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 41630400

約数和(自身を除く): 21773444

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 343, 353, 574, 686, 706, 1148, 1372, 1412, 2009, 2471, 4018, 4942, 8036, 9884, 14063, 14473, 17297, 28126, 28946, 34594, 56252, 57892, 69188, 101311, 121079, 202622, 242158, 405244, 484316, 709177, 1418354, 2836708, 4964239, 9928478, 19856956]

約数ペア:

[(1, 19856956), (2, 9928478), (4, 4964239), (7, 2836708), (14, 1418354), (28, 709177), (41, 484316), (49, 405244), (82, 242158), (98, 202622), (164, 121079), (196, 101311), (287, 69188), (343, 57892), (353, 56252), (574, 34594), (686, 28946), (706, 28126), (1148, 17297), (1372, 14473), (1412, 14063), (2009, 9884), (2471, 8036), (4018, 4942)]