21481755

素因数分解:

$3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10303}}^1$

素因数の和:10450

約数の個数: 16

約数和(自身を含む): 34621440

約数和(自身を除く): 13139685

約数列:

[1, 3, 5, 15, 139, 417, 695, 2085, 10303, 30909, 51515, 154545, 1432117, 4296351, 7160585, 21481755]

約数ペア:

[(1, 21481755), (3, 7160585), (5, 4296351), (15, 1432117), (139, 154545), (417, 51515), (695, 30909), (2085, 10303)]