21378154

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80369}}^1$

素因数の和:80397

約数の個数: 16

約数和(自身を含む): 38577600

約数和(自身を除く): 17199446

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80369, 160738, 562583, 1125166, 1527011, 3054022, 10689077, 21378154]

約数ペア:

[(1, 21378154), (2, 10689077), (7, 3054022), (14, 1527011), (19, 1125166), (38, 562583), (133, 160738), (266, 80369)]