21851216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71879}}^1$

素因数の和:71906

約数の個数: 20

約数和(自身を含む): 44565600

約数和(自身を除く): 22714384

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71879, 143758, 287516, 575032, 1150064, 1365701, 2731402, 5462804, 10925608, 21851216]

約数ペア:

[(1, 21851216), (2, 10925608), (4, 5462804), (8, 2731402), (16, 1365701), (19, 1150064), (38, 575032), (76, 287516), (152, 143758), (304, 71879)]