21294128

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25111}}^1$

素因数の和:25172

約数の個数: 20

約数和(自身を含む): 42037488

約数和(自身を除く): 20743360

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25111, 50222, 100444, 200888, 401776, 1330883, 2661766, 5323532, 10647064, 21294128]

約数ペア:

[(1, 21294128), (2, 10647064), (4, 5323532), (8, 2661766), (16, 1330883), (53, 401776), (106, 200888), (212, 100444), (424, 50222), (848, 25111)]