21087920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37657}}^1$

素因数の和:37677

約数の個数: 40

約数和(自身を含む): 56035104

約数和(自身を除く): 34947184

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37657, 75314, 150628, 188285, 263599, 301256, 376570, 527198, 602512, 753140, 1054396, 1317995, 1506280, 2108792, 2635990, 3012560, 4217584, 5271980, 10543960, 21087920]

約数ペア:

[(1, 21087920), (2, 10543960), (4, 5271980), (5, 4217584), (7, 3012560), (8, 2635990), (10, 2108792), (14, 1506280), (16, 1317995), (20, 1054396), (28, 753140), (35, 602512), (40, 527198), (56, 376570), (70, 301256), (80, 263599), (112, 188285), (140, 150628), (280, 75314), (560, 37657)]