21793455

素因数分解:

$3^7\times 5^1\times {\mathrm{1993}}^1$

素因数の和:2019

約数の個数: 32

約数和(自身を含む): 39241920

約数和(自身を除く): 17448465

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1993, 2187, 3645, 5979, 9965, 10935, 17937, 29895, 53811, 89685, 161433, 269055, 484299, 807165, 1452897, 2421495, 4358691, 7264485, 21793455]

約数ペア:

[(1, 21793455), (3, 7264485), (5, 4358691), (9, 2421495), (15, 1452897), (27, 807165), (45, 484299), (81, 269055), (135, 161433), (243, 89685), (405, 53811), (729, 29895), (1215, 17937), (1993, 10935), (2187, 9965), (3645, 5979)]