81713576

素因数分解:

$2^3\times 7^3\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 181104000

約数和(自身を除く): 99390424

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 97, 98, 194, 196, 307, 343, 388, 392, 614, 679, 686, 776, 1228, 1358, 1372, 2149, 2456, 2716, 2744, 4298, 4753, 5432, 8596, 9506, 15043, 17192, 19012, 29779, 30086, 33271, 38024, 59558, 60172, 66542, 105301, 119116, 120344, 133084, 208453, 210602, 238232, 266168, 416906, 421204, 833812, 842408, 1459171, 1667624, 2918342, 5836684, 10214197, 11673368, 20428394, 40856788, 81713576]

約数ペア:

[(1, 81713576), (2, 40856788), (4, 20428394), (7, 11673368), (8, 10214197), (14, 5836684), (28, 2918342), (49, 1667624), (56, 1459171), (97, 842408), (98, 833812), (194, 421204), (196, 416906), (307, 266168), (343, 238232), (388, 210602), (392, 208453), (614, 133084), (679, 120344), (686, 119116), (776, 105301), (1228, 66542), (1358, 60172), (1372, 59558), (2149, 38024), (2456, 33271), (2716, 30086), (2744, 29779), (4298, 19012), (4753, 17192), (5432, 15043), (8596, 9506)]