19511121

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 34062336

約数和(自身を除く): 14551215

約数列:

[1, 3, 7, 17, 21, 31, 41, 43, 51, 93, 119, 123, 129, 217, 287, 301, 357, 527, 651, 697, 731, 861, 903, 1271, 1333, 1581, 1763, 2091, 2193, 3689, 3813, 3999, 4879, 5117, 5289, 8897, 9331, 11067, 12341, 14637, 15351, 21607, 22661, 26691, 27993, 29971, 37023, 54653, 64821, 67983, 89913, 151249, 158627, 163959, 209797, 382571, 453747, 475881, 629391, 929101, 1147713, 2787303, 6503707, 19511121]

約数ペア:

[(1, 19511121), (3, 6503707), (7, 2787303), (17, 1147713), (21, 929101), (31, 629391), (41, 475881), (43, 453747), (51, 382571), (93, 209797), (119, 163959), (123, 158627), (129, 151249), (217, 89913), (287, 67983), (301, 64821), (357, 54653), (527, 37023), (651, 29971), (697, 27993), (731, 26691), (861, 22661), (903, 21607), (1271, 15351), (1333, 14637), (1581, 12341), (1763, 11067), (2091, 9331), (2193, 8897), (3689, 5289), (3813, 5117), (3999, 4879)]