21740565

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2689}}^1$

素因数の和:2722

約数の個数: 48

約数和(自身を含む): 44159040

約数和(自身を除く): 22418475

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2689, 2695, 8067, 8085, 13445, 18823, 29579, 40335, 56469, 88737, 94115, 131761, 147895, 207053, 282345, 395283, 443685, 621159, 658805, 1035265, 1449371, 1976415, 3105795, 4348113, 7246855, 21740565]

約数ペア:

[(1, 21740565), (3, 7246855), (5, 4348113), (7, 3105795), (11, 1976415), (15, 1449371), (21, 1035265), (33, 658805), (35, 621159), (49, 443685), (55, 395283), (77, 282345), (105, 207053), (147, 147895), (165, 131761), (231, 94115), (245, 88737), (385, 56469), (539, 40335), (735, 29579), (1155, 18823), (1617, 13445), (2689, 8085), (2695, 8067)]