21962171

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{12401}}^1$

素因数の和:12442

約数の個数: 16

約数和(自身を含む): 28574208

約数和(自身を除く): 6612037

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 12401, 86807, 136411, 285223, 954877, 1996561, 3137453, 21962171]

約数ペア:

[(1, 21962171), (7, 3137453), (11, 1996561), (23, 954877), (77, 285223), (161, 136411), (253, 86807), (1771, 12401)]