81928060

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{46027}}^1$

素因数の和:46125

約数の個数: 24

約数和(自身を含む): 173985840

約数和(自身を除く): 92057780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 46027, 92054, 184108, 230135, 460270, 920540, 4096403, 8192806, 16385612, 20482015, 40964030, 81928060]

約数ペア:

[(1, 81928060), (2, 40964030), (4, 20482015), (5, 16385612), (10, 8192806), (20, 4096403), (89, 920540), (178, 460270), (356, 230135), (445, 184108), (890, 92054), (1780, 46027)]