18986128

素因数分解:

$2^4\times 7^2\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:480

約数の個数: 60

約数和(自身を含む): 43602492

約数和(自身を除く): 24616364

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 61, 98, 112, 122, 196, 244, 392, 397, 427, 488, 784, 794, 854, 976, 1588, 1708, 2779, 2989, 3176, 3416, 5558, 5978, 6352, 6832, 11116, 11956, 19453, 22232, 23912, 24217, 38906, 44464, 47824, 48434, 77812, 96868, 155624, 169519, 193736, 311248, 339038, 387472, 678076, 1186633, 1356152, 2373266, 2712304, 4746532, 9493064, 18986128]

約数ペア:

[(1, 18986128), (2, 9493064), (4, 4746532), (7, 2712304), (8, 2373266), (14, 1356152), (16, 1186633), (28, 678076), (49, 387472), (56, 339038), (61, 311248), (98, 193736), (112, 169519), (122, 155624), (196, 96868), (244, 77812), (392, 48434), (397, 47824), (427, 44464), (488, 38906), (784, 24217), (794, 23912), (854, 22232), (976, 19453), (1588, 11956), (1708, 11116), (2779, 6832), (2989, 6352), (3176, 5978), (3416, 5558)]