217420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1553}}^1$

素因数の和:1569

約数の個数: 24

約数和(自身を含む): 522144

約数和(自身を除く): 304724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1553, 3106, 6212, 7765, 10871, 15530, 21742, 31060, 43484, 54355, 108710, 217420]

約数ペア:

[(1, 217420), (2, 108710), (4, 54355), (5, 43484), (7, 31060), (10, 21742), (14, 15530), (20, 10871), (28, 7765), (35, 6212), (70, 3106), (140, 1553)]