21310515

素因数分解:

$3^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1069}}^1$

素因数の和:1523

約数の個数: 24

約数和(自身を含む): 37056240

約数和(自身を除く): 15745725

約数列:

[1, 3, 5, 9, 15, 45, 443, 1069, 1329, 2215, 3207, 3987, 5345, 6645, 9621, 16035, 19935, 48105, 473567, 1420701, 2367835, 4262103, 7103505, 21310515]

約数ペア:

[(1, 21310515), (3, 7103505), (5, 4262103), (9, 2367835), (15, 1420701), (45, 473567), (443, 48105), (1069, 19935), (1329, 16035), (2215, 9621), (3207, 6645), (3987, 5345)]