20281168

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{18919}}^1$

素因数の和:18994

約数の個数: 20

約数和(自身を含む): 39883360

約数和(自身を除く): 19602192

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 18919, 37838, 75676, 151352, 302704, 1267573, 2535146, 5070292, 10140584, 20281168]

約数ペア:

[(1, 20281168), (2, 10140584), (4, 5070292), (8, 2535146), (16, 1267573), (67, 302704), (134, 151352), (268, 75676), (536, 37838), (1072, 18919)]