21139965

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6101}}^1$

素因数の和:6130

約数の個数: 48

約数和(自身を含む): 45691776

約数和(自身を除く): 24551811

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 165, 231, 315, 385, 495, 693, 1155, 3465, 6101, 18303, 30505, 42707, 54909, 67111, 91515, 128121, 201333, 213535, 274545, 335555, 384363, 469777, 603999, 640605, 1006665, 1409331, 1921815, 2348885, 3019995, 4227993, 7046655, 21139965]

約数ペア:

[(1, 21139965), (3, 7046655), (5, 4227993), (7, 3019995), (9, 2348885), (11, 1921815), (15, 1409331), (21, 1006665), (33, 640605), (35, 603999), (45, 469777), (55, 384363), (63, 335555), (77, 274545), (99, 213535), (105, 201333), (165, 128121), (231, 91515), (315, 67111), (385, 54909), (495, 42707), (693, 30505), (1155, 18303), (3465, 6101)]