81420084

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 211891680

約数和(自身を除く): 130471596

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 139, 159, 212, 278, 307, 318, 417, 477, 556, 614, 636, 834, 921, 954, 1228, 1251, 1668, 1842, 1908, 2502, 2763, 3684, 5004, 5526, 7367, 11052, 14734, 16271, 22101, 29468, 32542, 42673, 44202, 48813, 65084, 66303, 85346, 88404, 97626, 128019, 132606, 146439, 170692, 195252, 256038, 265212, 292878, 384057, 512076, 585756, 768114, 1536228, 2261669, 4523338, 6785007, 9046676, 13570014, 20355021, 27140028, 40710042, 81420084]

約数ペア:

[(1, 81420084), (2, 40710042), (3, 27140028), (4, 20355021), (6, 13570014), (9, 9046676), (12, 6785007), (18, 4523338), (36, 2261669), (53, 1536228), (106, 768114), (139, 585756), (159, 512076), (212, 384057), (278, 292878), (307, 265212), (318, 256038), (417, 195252), (477, 170692), (556, 146439), (614, 132606), (636, 128019), (834, 97626), (921, 88404), (954, 85346), (1228, 66303), (1251, 65084), (1668, 48813), (1842, 44202), (1908, 42673), (2502, 32542), (2763, 29468), (3684, 22101), (5004, 16271), (5526, 14734), (7367, 11052)]