21380804578

素因数分解:

$2^1\times 7^1\times {\mathrm{8731}}^1\times {\mathrm{174917}}^1$

素因数の和:183657

約数の個数: 16

約数和(自身を含む): 36657215424

約数和(自身を除く): 15276410846

約数列:

[1, 2, 7, 14, 8731, 17462, 61117, 122234, 174917, 349834, 1224419, 2448838, 1527200327, 3054400654, 10690402289, 21380804578]

約数ペア:

[(1, 21380804578), (2, 10690402289), (7, 3054400654), (14, 1527200327), (8731, 2448838), (17462, 1224419), (61117, 349834), (122234, 174917)]