64989920

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{9907}}^1$

素因数の和:9963

約数の個数: 48

約数和(自身を含む): 157299408

約数和(自身を除く): 92309488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 6560, 9907, 19814, 39628, 49535, 79256, 99070, 158512, 198140, 317024, 396280, 406187, 792560, 812374, 1585120, 1624748, 2030935, 3249496, 4061870, 6498992, 8123740, 12997984, 16247480, 32494960, 64989920]

約数ペア:

[(1, 64989920), (2, 32494960), (4, 16247480), (5, 12997984), (8, 8123740), (10, 6498992), (16, 4061870), (20, 3249496), (32, 2030935), (40, 1624748), (41, 1585120), (80, 812374), (82, 792560), (160, 406187), (164, 396280), (205, 317024), (328, 198140), (410, 158512), (656, 99070), (820, 79256), (1312, 49535), (1640, 39628), (3280, 19814), (6560, 9907)]