81357748

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{173}}^1\times {\mathrm{1321}}^1$

素因数の和:1587

約数の個数: 24

約数和(自身を含む): 144917640

約数和(自身を除く): 63559892

約数列:

[1, 2, 4, 89, 173, 178, 346, 356, 692, 1321, 2642, 5284, 15397, 30794, 61588, 117569, 228533, 235138, 457066, 470276, 914132, 20339437, 40678874, 81357748]

約数ペア:

[(1, 81357748), (2, 40678874), (4, 20339437), (89, 914132), (173, 470276), (178, 457066), (346, 235138), (356, 228533), (692, 117569), (1321, 61588), (2642, 30794), (5284, 15397)]