21969416

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{461}}^1$

素因数の和:534

約数の個数: 64

約数和(自身を含む): 50561280

約数和(自身を除く): 28591864

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 37, 46, 56, 74, 92, 148, 161, 184, 259, 296, 322, 461, 518, 644, 851, 922, 1036, 1288, 1702, 1844, 2072, 3227, 3404, 3688, 5957, 6454, 6808, 10603, 11914, 12908, 17057, 21206, 23828, 25816, 34114, 42412, 47656, 68228, 74221, 84824, 119399, 136456, 148442, 238798, 296884, 392311, 477596, 593768, 784622, 955192, 1569244, 2746177, 3138488, 5492354, 10984708, 21969416]

約数ペア:

[(1, 21969416), (2, 10984708), (4, 5492354), (7, 3138488), (8, 2746177), (14, 1569244), (23, 955192), (28, 784622), (37, 593768), (46, 477596), (56, 392311), (74, 296884), (92, 238798), (148, 148442), (161, 136456), (184, 119399), (259, 84824), (296, 74221), (322, 68228), (461, 47656), (518, 42412), (644, 34114), (851, 25816), (922, 23828), (1036, 21206), (1288, 17057), (1702, 12908), (1844, 11914), (2072, 10603), (3227, 6808), (3404, 6454), (3688, 5957)]