20820371

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 26342400

約数和(自身を除く): 5522029

約数列:

[1, 11, 13, 19, 79, 97, 143, 209, 247, 869, 1027, 1067, 1261, 1501, 1843, 2717, 7663, 11297, 13871, 16511, 19513, 20273, 23959, 84293, 99619, 145597, 214643, 263549, 1095809, 1601567, 1892761, 20820371]

約数ペア:

[(1, 20820371), (11, 1892761), (13, 1601567), (19, 1095809), (79, 263549), (97, 214643), (143, 145597), (209, 99619), (247, 84293), (869, 23959), (1027, 20273), (1067, 19513), (1261, 16511), (1501, 13871), (1843, 11297), (2717, 7663)]