189957789

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{70121}}^1$

素因数の和:70177

約数の個数: 24

約数和(自身を含む): 320878272

約数和(自身を除く): 130920483

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 70121, 210363, 490847, 631089, 1472541, 3015203, 4417623, 9045609, 21106421, 27136827, 63319263, 189957789]

約数ペア:

[(1, 189957789), (3, 63319263), (7, 27136827), (9, 21106421), (21, 9045609), (43, 4417623), (63, 3015203), (129, 1472541), (301, 631089), (387, 490847), (903, 210363), (2709, 70121)]