21068685

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1373}}^1$

素因数の和:1426

約数の個数: 48

約数和(自身を含む): 41154048

約数和(自身を除く): 20085363

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 155, 165, 279, 341, 465, 495, 1023, 1373, 1395, 1705, 3069, 4119, 5115, 6865, 12357, 15103, 15345, 20595, 42563, 45309, 61785, 75515, 127689, 135927, 212815, 226545, 383067, 468193, 638445, 679635, 1404579, 1915335, 2340965, 4213737, 7022895, 21068685]

約数ペア:

[(1, 21068685), (3, 7022895), (5, 4213737), (9, 2340965), (11, 1915335), (15, 1404579), (31, 679635), (33, 638445), (45, 468193), (55, 383067), (93, 226545), (99, 212815), (155, 135927), (165, 127689), (279, 75515), (341, 61785), (465, 45309), (495, 42563), (1023, 20595), (1373, 15345), (1395, 15103), (1705, 12357), (3069, 6865), (4119, 5115)]