199137687

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{220529}}^1$

素因数の和:220582

約数の個数: 16

約数和(自身を含む): 310506240

約数和(自身を除く): 111368553

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 220529, 661587, 1543703, 4631109, 9482747, 28448241, 66379229, 199137687]

約数ペア:

[(1, 199137687), (3, 66379229), (7, 28448241), (21, 9482747), (43, 4631109), (129, 1543703), (301, 661587), (903, 220529)]