21420168

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:267

約数の個数: 128

約数和(自身を含む): 68152320

約数和(自身を除く): 46732152

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 67, 77, 84, 88, 132, 134, 154, 168, 173, 201, 231, 264, 268, 308, 346, 402, 462, 469, 519, 536, 616, 692, 737, 804, 924, 938, 1038, 1211, 1384, 1407, 1474, 1608, 1848, 1876, 1903, 2076, 2211, 2422, 2814, 2948, 3633, 3752, 3806, 4152, 4422, 4844, 5159, 5628, 5709, 5896, 7266, 7612, 8844, 9688, 10318, 11256, 11418, 11591, 13321, 14532, 15224, 15477, 17688, 20636, 22836, 23182, 26642, 29064, 30954, 34773, 39963, 41272, 45672, 46364, 53284, 61908, 69546, 79926, 81137, 92728, 106568, 123816, 127501, 139092, 159852, 162274, 243411, 255002, 278184, 319704, 324548, 382503, 486822, 510004, 649096, 765006, 892507, 973644, 1020008, 1530012, 1785014, 1947288, 2677521, 3060024, 3570028, 5355042, 7140056, 10710084, 21420168]

約数ペア:

[(1, 21420168), (2, 10710084), (3, 7140056), (4, 5355042), (6, 3570028), (7, 3060024), (8, 2677521), (11, 1947288), (12, 1785014), (14, 1530012), (21, 1020008), (22, 973644), (24, 892507), (28, 765006), (33, 649096), (42, 510004), (44, 486822), (56, 382503), (66, 324548), (67, 319704), (77, 278184), (84, 255002), (88, 243411), (132, 162274), (134, 159852), (154, 139092), (168, 127501), (173, 123816), (201, 106568), (231, 92728), (264, 81137), (268, 79926), (308, 69546), (346, 61908), (402, 53284), (462, 46364), (469, 45672), (519, 41272), (536, 39963), (616, 34773), (692, 30954), (737, 29064), (804, 26642), (924, 23182), (938, 22836), (1038, 20636), (1211, 17688), (1384, 15477), (1407, 15224), (1474, 14532), (1608, 13321), (1848, 11591), (1876, 11418), (1903, 11256), (2076, 10318), (2211, 9688), (2422, 8844), (2814, 7612), (2948, 7266), (3633, 5896), (3752, 5709), (3806, 5628), (4152, 5159), (4422, 4844)]