21090812

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{7213}}^1$

素因数の和:7277

約数の個数: 24

約数和(自身を含む): 39994416

約数和(自身を除く): 18903604

約数列:

[1, 2, 4, 17, 34, 43, 68, 86, 172, 731, 1462, 2924, 7213, 14426, 28852, 122621, 245242, 310159, 490484, 620318, 1240636, 5272703, 10545406, 21090812]

約数ペア:

[(1, 21090812), (2, 10545406), (4, 5272703), (17, 1240636), (34, 620318), (43, 490484), (68, 310159), (86, 245242), (172, 122621), (731, 28852), (1462, 14426), (2924, 7213)]