668745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 1452672

約数和(自身を除く): 783927

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 165, 193, 231, 315, 385, 495, 579, 693, 965, 1155, 1351, 1737, 2123, 2895, 3465, 4053, 6369, 6755, 8685, 10615, 12159, 14861, 19107, 20265, 31845, 44583, 60795, 74305, 95535, 133749, 222915, 668745]

約数ペア:

[(1, 668745), (3, 222915), (5, 133749), (7, 95535), (9, 74305), (11, 60795), (15, 44583), (21, 31845), (33, 20265), (35, 19107), (45, 14861), (55, 12159), (63, 10615), (77, 8685), (99, 6755), (105, 6369), (165, 4053), (193, 3465), (231, 2895), (315, 2123), (385, 1737), (495, 1351), (579, 1155), (693, 965)]