818140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2153}}^1$

素因数の和:2181

約数の個数: 24

約数和(自身を含む): 1809360

約数和(自身を除く): 991220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 2153, 4306, 8612, 10765, 21530, 40907, 43060, 81814, 163628, 204535, 409070, 818140]

約数ペア:

[(1, 818140), (2, 409070), (4, 204535), (5, 163628), (10, 81814), (19, 43060), (20, 40907), (38, 21530), (76, 10765), (95, 8612), (190, 4306), (380, 2153)]