20765745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{461}}^1$

素因数の和:503

約数の個数: 96

約数和(自身を含む): 48432384

約数和(自身を除く): 27666639

約数列:

[1, 3, 5, 7, 9, 11, 13, 15, 21, 33, 35, 39, 45, 55, 63, 65, 77, 91, 99, 105, 117, 143, 165, 195, 231, 273, 315, 385, 429, 455, 461, 495, 585, 693, 715, 819, 1001, 1155, 1287, 1365, 1383, 2145, 2305, 3003, 3227, 3465, 4095, 4149, 5005, 5071, 5993, 6435, 6915, 9009, 9681, 15015, 15213, 16135, 17979, 20745, 25355, 29043, 29965, 35497, 41951, 45045, 45639, 48405, 53937, 65923, 76065, 89895, 106491, 125853, 145215, 177485, 197769, 209755, 228195, 269685, 319473, 329615, 377559, 461461, 532455, 593307, 629265, 988845, 1384383, 1597365, 1887795, 2307305, 2966535, 4153149, 6921915, 20765745]

約数ペア:

[(1, 20765745), (3, 6921915), (5, 4153149), (7, 2966535), (9, 2307305), (11, 1887795), (13, 1597365), (15, 1384383), (21, 988845), (33, 629265), (35, 593307), (39, 532455), (45, 461461), (55, 377559), (63, 329615), (65, 319473), (77, 269685), (91, 228195), (99, 209755), (105, 197769), (117, 177485), (143, 145215), (165, 125853), (195, 106491), (231, 89895), (273, 76065), (315, 65923), (385, 53937), (429, 48405), (455, 45639), (461, 45045), (495, 41951), (585, 35497), (693, 29965), (715, 29043), (819, 25355), (1001, 20745), (1155, 17979), (1287, 16135), (1365, 15213), (1383, 15015), (2145, 9681), (2305, 9009), (3003, 6915), (3227, 6435), (3465, 5993), (4095, 5071), (4149, 5005)]