20800016

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19403}}^1$

素因数の和:19478

約数の個数: 20

約数和(自身を含む): 40903632

約数和(自身を除く): 20103616

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19403, 38806, 77612, 155224, 310448, 1300001, 2600002, 5200004, 10400008, 20800016]

約数ペア:

[(1, 20800016), (2, 10400008), (4, 5200004), (8, 2600002), (16, 1300001), (67, 310448), (134, 155224), (268, 77612), (536, 38806), (1072, 19403)]