20211579

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{311}}^1$

素因数の和:432

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 11238021

約数列:

[1, 3, 9, 27, 29, 83, 87, 249, 261, 311, 747, 783, 933, 2241, 2407, 2799, 7221, 8397, 9019, 21663, 25813, 27057, 64989, 77439, 81171, 232317, 243513, 696951, 748577, 2245731, 6737193, 20211579]

約数ペア:

[(1, 20211579), (3, 6737193), (9, 2245731), (27, 748577), (29, 696951), (83, 243513), (87, 232317), (249, 81171), (261, 77439), (311, 64989), (747, 27057), (783, 25813), (933, 21663), (2241, 9019), (2407, 8397), (2799, 7221)]