21581672

素因数分解:

$2^3\times 7^1\times {\mathrm{179}}^1\times {\mathrm{2153}}^1$

素因数の和:2345

約数の個数: 32

約数和(自身を含む): 46526400

約数和(自身を除く): 24944728

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 179, 358, 716, 1253, 1432, 2153, 2506, 4306, 5012, 8612, 10024, 15071, 17224, 30142, 60284, 120568, 385387, 770774, 1541548, 2697709, 3083096, 5395418, 10790836, 21581672]

約数ペア:

[(1, 21581672), (2, 10790836), (4, 5395418), (7, 3083096), (8, 2697709), (14, 1541548), (28, 770774), (56, 385387), (179, 120568), (358, 60284), (716, 30142), (1253, 17224), (1432, 15071), (2153, 10024), (2506, 8612), (4306, 5012)]