21706965

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{503}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 43400448

約数和(自身を除く): 21693483

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 137, 315, 411, 503, 685, 959, 1233, 1509, 2055, 2515, 2877, 3521, 4527, 4795, 6165, 7545, 8631, 10563, 14385, 17605, 22635, 31689, 43155, 52815, 68911, 158445, 206733, 344555, 482377, 620199, 1033665, 1447131, 2411885, 3100995, 4341393, 7235655, 21706965]

約数ペア:

[(1, 21706965), (3, 7235655), (5, 4341393), (7, 3100995), (9, 2411885), (15, 1447131), (21, 1033665), (35, 620199), (45, 482377), (63, 344555), (105, 206733), (137, 158445), (315, 68911), (411, 52815), (503, 43155), (685, 31689), (959, 22635), (1233, 17605), (1509, 14385), (2055, 10563), (2515, 8631), (2877, 7545), (3521, 6165), (4527, 4795)]