18065920

素因数分解:

$2^9\times 5^1\times {\mathrm{7057}}^1$

素因数の和:7080

約数の個数: 40

約数和(自身を含む): 43322004

約数和(自身を除く): 25256084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7057, 14114, 28228, 35285, 56456, 70570, 112912, 141140, 225824, 282280, 451648, 564560, 903296, 1129120, 1806592, 2258240, 3613184, 4516480, 9032960, 18065920]

約数ペア:

[(1, 18065920), (2, 9032960), (4, 4516480), (5, 3613184), (8, 2258240), (10, 1806592), (16, 1129120), (20, 903296), (32, 564560), (40, 451648), (64, 282280), (80, 225824), (128, 141140), (160, 112912), (256, 70570), (320, 56456), (512, 35285), (640, 28228), (1280, 14114), (2560, 7057)]