20994449

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3671}}^1$

素因数の和:3740

約数の個数: 16

約数和(自身を含む): 25850880

約数和(自身を除く): 4856431

約数列:

[1, 7, 19, 43, 133, 301, 817, 3671, 5719, 25697, 69749, 157853, 488243, 1104971, 2999207, 20994449]

約数ペア:

[(1, 20994449), (7, 2999207), (19, 1104971), (43, 488243), (133, 157853), (301, 69749), (817, 25697), (3671, 5719)]