20511579

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 31124736

約数和(自身を除く): 10613157

約数列:

[1, 3, 11, 33, 37, 107, 111, 157, 321, 407, 471, 1177, 1221, 1727, 3531, 3959, 5181, 5809, 11877, 16799, 17427, 43549, 50397, 63899, 130647, 184789, 191697, 554367, 621563, 1864689, 6837193, 20511579]

約数ペア:

[(1, 20511579), (3, 6837193), (11, 1864689), (33, 621563), (37, 554367), (107, 191697), (111, 184789), (157, 130647), (321, 63899), (407, 50397), (471, 43549), (1177, 17427), (1221, 16799), (1727, 11877), (3531, 5809), (3959, 5181)]