21988912

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1237}}^1$

素因数の和:1357

約数の個数: 40

約数和(自身を含む): 46974672

約数和(自身を除く): 24985760

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 101, 176, 202, 404, 808, 1111, 1237, 1616, 2222, 2474, 4444, 4948, 8888, 9896, 13607, 17776, 19792, 27214, 54428, 108856, 124937, 217712, 249874, 499748, 999496, 1374307, 1998992, 2748614, 5497228, 10994456, 21988912]

約数ペア:

[(1, 21988912), (2, 10994456), (4, 5497228), (8, 2748614), (11, 1998992), (16, 1374307), (22, 999496), (44, 499748), (88, 249874), (101, 217712), (176, 124937), (202, 108856), (404, 54428), (808, 27214), (1111, 19792), (1237, 17776), (1616, 13607), (2222, 9896), (2474, 8888), (4444, 4948)]