21702489

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 32006016

約数和(自身を除く): 10303527

約数列:

[1, 3, 17, 41, 51, 97, 107, 123, 291, 321, 697, 1649, 1819, 2091, 3977, 4387, 4947, 5457, 10379, 11931, 13161, 31137, 67609, 74579, 176443, 202827, 223737, 425539, 529329, 1276617, 7234163, 21702489]

約数ペア:

[(1, 21702489), (3, 7234163), (17, 1276617), (41, 529329), (51, 425539), (97, 223737), (107, 202827), (123, 176443), (291, 74579), (321, 67609), (697, 31137), (1649, 13161), (1819, 11931), (2091, 10379), (3977, 5457), (4387, 4947)]