81638970

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{388757}}^1$

素因数の和:388774

約数の個数: 32

約数和(自身を含む): 223924608

約数和(自身を除く): 142285638

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 388757, 777514, 1166271, 1943785, 2332542, 2721299, 3887570, 5442598, 5831355, 8163897, 11662710, 13606495, 16327794, 27212990, 40819485, 81638970]

約数ペア:

[(1, 81638970), (2, 40819485), (3, 27212990), (5, 16327794), (6, 13606495), (7, 11662710), (10, 8163897), (14, 5831355), (15, 5442598), (21, 3887570), (30, 2721299), (35, 2332542), (42, 1943785), (70, 1166271), (105, 777514), (210, 388757)]