19564821

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8329}}^1$

素因数の和:8370

約数の個数: 20

約数和(自身を含む): 30237900

約数和(自身を除く): 10673079

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8329, 24987, 74961, 224883, 241541, 674649, 724623, 2173869, 6521607, 19564821]

約数ペア:

[(1, 19564821), (3, 6521607), (9, 2173869), (27, 724623), (29, 674649), (81, 241541), (87, 224883), (261, 74961), (783, 24987), (2349, 8329)]