20648895

素因数分解:

$3^1\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1409}}^1$

素因数の和:2394

約数の個数: 16

約数和(自身を含む): 33095520

約数和(自身を除く): 12446625

約数列:

[1, 3, 5, 15, 977, 1409, 2931, 4227, 4885, 7045, 14655, 21135, 1376593, 4129779, 6882965, 20648895]

約数ペア:

[(1, 20648895), (3, 6882965), (5, 4129779), (15, 1376593), (977, 21135), (1409, 14655), (2931, 7045), (4227, 4885)]