821380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{5867}}^1$

素因数の和:5883

約数の個数: 24

約数和(自身を含む): 1971648

約数和(自身を除く): 1150268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 5867, 11734, 23468, 29335, 41069, 58670, 82138, 117340, 164276, 205345, 410690, 821380]

約数ペア:

[(1, 821380), (2, 410690), (4, 205345), (5, 164276), (7, 117340), (10, 82138), (14, 58670), (20, 41069), (28, 29335), (35, 23468), (70, 11734), (140, 5867)]