81691890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5479}}^1$

素因数の和:5567

約数の個数: 64

約数和(自身を含む): 227266560

約数和(自身を除く): 145574670

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 71, 105, 142, 210, 213, 355, 426, 497, 710, 994, 1065, 1491, 2130, 2485, 2982, 4970, 5479, 7455, 10958, 14910, 16437, 27395, 32874, 38353, 54790, 76706, 82185, 115059, 164370, 191765, 230118, 383530, 389009, 575295, 778018, 1150590, 1167027, 1945045, 2334054, 2723063, 3890090, 5446126, 5835135, 8169189, 11670270, 13615315, 16338378, 27230630, 40845945, 81691890]

約数ペア:

[(1, 81691890), (2, 40845945), (3, 27230630), (5, 16338378), (6, 13615315), (7, 11670270), (10, 8169189), (14, 5835135), (15, 5446126), (21, 3890090), (30, 2723063), (35, 2334054), (42, 1945045), (70, 1167027), (71, 1150590), (105, 778018), (142, 575295), (210, 389009), (213, 383530), (355, 230118), (426, 191765), (497, 164370), (710, 115059), (994, 82185), (1065, 76706), (1491, 54790), (2130, 38353), (2485, 32874), (2982, 27395), (4970, 16437), (5479, 14910), (7455, 10958)]