21071176

素因数分解:

$2^3\times 7^4\times {\mathrm{1097}}^1$

素因数の和:1131

約数の個数: 40

約数和(自身を含む): 46132470

約数和(自身を除く): 25061294

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1097, 1372, 2194, 2401, 2744, 4388, 4802, 7679, 8776, 9604, 15358, 19208, 30716, 53753, 61432, 107506, 215012, 376271, 430024, 752542, 1505084, 2633897, 3010168, 5267794, 10535588, 21071176]

約数ペア:

[(1, 21071176), (2, 10535588), (4, 5267794), (7, 3010168), (8, 2633897), (14, 1505084), (28, 752542), (49, 430024), (56, 376271), (98, 215012), (196, 107506), (343, 61432), (392, 53753), (686, 30716), (1097, 19208), (1372, 15358), (2194, 9604), (2401, 8776), (2744, 7679), (4388, 4802)]