21775905

素因数分解:

$3^3\times 5^1\times {\mathrm{161303}}^1$

素因数の和:161317

約数の個数: 16

約数和(自身を含む): 38712960

約数和(自身を除く): 16937055

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 161303, 483909, 806515, 1451727, 2419545, 4355181, 7258635, 21775905]

約数ペア:

[(1, 21775905), (3, 7258635), (5, 4355181), (9, 2419545), (15, 1451727), (27, 806515), (45, 483909), (135, 161303)]