20857529

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{7321}}^1$

素因数の和:7376

約数の個数: 16

約数和(自身を含む): 26710656

約数和(自身を除く): 5853127

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 7321, 51247, 80531, 270877, 563717, 1896139, 2979647, 20857529]

約数ペア:

[(1, 20857529), (7, 2979647), (11, 1896139), (37, 563717), (77, 270877), (259, 80531), (407, 51247), (2849, 7321)]