178770920

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{43391}}^1$

素因数の和:43505

約数の個数: 32

約数和(自身を含む): 406149120

約数和(自身を除く): 227378200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 43391, 86782, 173564, 216955, 347128, 433910, 867820, 1735640, 4469273, 8938546, 17877092, 22346365, 35754184, 44692730, 89385460, 178770920]

約数ペア:

[(1, 178770920), (2, 89385460), (4, 44692730), (5, 35754184), (8, 22346365), (10, 17877092), (20, 8938546), (40, 4469273), (103, 1735640), (206, 867820), (412, 433910), (515, 347128), (824, 216955), (1030, 173564), (2060, 86782), (4120, 43391)]