21100728

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{311}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 57957120

約数和(自身を除く): 36856392

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 257, 264, 311, 514, 622, 771, 933, 1028, 1244, 1542, 1866, 2056, 2488, 2827, 3084, 3421, 3732, 5654, 6168, 6842, 7464, 8481, 10263, 11308, 13684, 16962, 20526, 22616, 27368, 33924, 41052, 67848, 79927, 82104, 159854, 239781, 319708, 479562, 639416, 879197, 959124, 1758394, 1918248, 2637591, 3516788, 5275182, 7033576, 10550364, 21100728]

約数ペア:

[(1, 21100728), (2, 10550364), (3, 7033576), (4, 5275182), (6, 3516788), (8, 2637591), (11, 1918248), (12, 1758394), (22, 959124), (24, 879197), (33, 639416), (44, 479562), (66, 319708), (88, 239781), (132, 159854), (257, 82104), (264, 79927), (311, 67848), (514, 41052), (622, 33924), (771, 27368), (933, 22616), (1028, 20526), (1244, 16962), (1542, 13684), (1866, 11308), (2056, 10263), (2488, 8481), (2827, 7464), (3084, 6842), (3421, 6168), (3732, 5654)]