21485310

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:230

約数の個数: 128

約数和(自身を含む): 65691648

約数和(自身を除く): 44206338

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 71, 77, 105, 110, 131, 142, 154, 165, 210, 213, 231, 262, 330, 355, 385, 393, 426, 462, 497, 655, 710, 770, 781, 786, 917, 994, 1065, 1155, 1310, 1441, 1491, 1562, 1834, 1965, 2130, 2310, 2343, 2485, 2751, 2882, 2982, 3905, 3930, 4323, 4585, 4686, 4970, 5467, 5502, 7205, 7455, 7810, 8646, 9170, 9301, 10087, 10934, 11715, 13755, 14410, 14910, 16401, 18602, 20174, 21615, 23430, 27335, 27510, 27903, 30261, 32802, 43230, 46505, 50435, 54670, 55806, 60522, 65107, 82005, 93010, 100870, 102311, 130214, 139515, 151305, 164010, 195321, 204622, 279030, 302610, 306933, 325535, 390642, 511555, 613866, 651070, 716177, 976605, 1023110, 1432354, 1534665, 1953210, 2148531, 3069330, 3580885, 4297062, 7161770, 10742655, 21485310]

約数ペア:

[(1, 21485310), (2, 10742655), (3, 7161770), (5, 4297062), (6, 3580885), (7, 3069330), (10, 2148531), (11, 1953210), (14, 1534665), (15, 1432354), (21, 1023110), (22, 976605), (30, 716177), (33, 651070), (35, 613866), (42, 511555), (55, 390642), (66, 325535), (70, 306933), (71, 302610), (77, 279030), (105, 204622), (110, 195321), (131, 164010), (142, 151305), (154, 139515), (165, 130214), (210, 102311), (213, 100870), (231, 93010), (262, 82005), (330, 65107), (355, 60522), (385, 55806), (393, 54670), (426, 50435), (462, 46505), (497, 43230), (655, 32802), (710, 30261), (770, 27903), (781, 27510), (786, 27335), (917, 23430), (994, 21615), (1065, 20174), (1155, 18602), (1310, 16401), (1441, 14910), (1491, 14410), (1562, 13755), (1834, 11715), (1965, 10934), (2130, 10087), (2310, 9301), (2343, 9170), (2485, 8646), (2751, 7810), (2882, 7455), (2982, 7205), (3905, 5502), (3930, 5467), (4323, 4970), (4585, 4686)]