21112147

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 5982893

約数列:

[1, 7, 17, 31, 59, 97, 119, 217, 413, 527, 679, 1003, 1649, 1829, 3007, 3689, 5723, 7021, 11543, 12803, 21049, 31093, 40061, 51119, 97291, 177413, 217651, 357833, 681037, 1241891, 3016021, 21112147]

約数ペア:

[(1, 21112147), (7, 3016021), (17, 1241891), (31, 681037), (59, 357833), (97, 217651), (119, 177413), (217, 97291), (413, 51119), (527, 40061), (679, 31093), (1003, 21049), (1649, 12803), (1829, 11543), (3007, 7021), (3689, 5723)]