18206380

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{6949}}^1$

素因数の和:7089

約数の個数: 24

約数和(自身を含む): 38530800

約数和(自身を除く): 20324420

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 6949, 13898, 27796, 34745, 69490, 138980, 910319, 1820638, 3641276, 4551595, 9103190, 18206380]

約数ペア:

[(1, 18206380), (2, 9103190), (4, 4551595), (5, 3641276), (10, 1820638), (20, 910319), (131, 138980), (262, 69490), (524, 34745), (655, 27796), (1310, 13898), (2620, 6949)]