20186481

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2591}}^1$

素因数の和:2661

約数の個数: 24

約数和(自身を含む): 31912704

約数和(自身を除く): 11726223

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2591, 2597, 7773, 7791, 18137, 54411, 126959, 137323, 380877, 411969, 961261, 2883783, 6728827, 20186481]

約数ペア:

[(1, 20186481), (3, 6728827), (7, 2883783), (21, 961261), (49, 411969), (53, 380877), (147, 137323), (159, 126959), (371, 54411), (1113, 18137), (2591, 7791), (2597, 7773)]