21713547

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 9897333

約数列:

[1, 3, 29, 31, 83, 87, 93, 97, 249, 291, 899, 2407, 2573, 2697, 2813, 3007, 7221, 7719, 8051, 8439, 9021, 24153, 74617, 87203, 223851, 233479, 249581, 261609, 700437, 748743, 7237849, 21713547]

約数ペア:

[(1, 21713547), (3, 7237849), (29, 748743), (31, 700437), (83, 261609), (87, 249581), (93, 233479), (97, 223851), (249, 87203), (291, 74617), (899, 24153), (2407, 9021), (2573, 8439), (2697, 8051), (2813, 7719), (3007, 7221)]