19810973

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{7507}}^1$

素因数の和:7556

約数の個数: 16

約数和(自身を含む): 25226880

約数和(自身を除く): 5415907

約数列:

[1, 7, 13, 29, 91, 203, 377, 2639, 7507, 52549, 97591, 217703, 683137, 1523921, 2830139, 19810973]

約数ペア:

[(1, 19810973), (7, 2830139), (13, 1523921), (29, 683137), (91, 217703), (203, 97591), (377, 52549), (2639, 7507)]