21247263

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7309}}^1$

素因数の和:7351

約数の個数: 24

約数和(自身を含む): 34210800

約数和(自身を除く): 12963537

約数列:

[1, 3, 9, 17, 19, 51, 57, 153, 171, 323, 969, 2907, 7309, 21927, 65781, 124253, 138871, 372759, 416613, 1118277, 1249839, 2360807, 7082421, 21247263]

約数ペア:

[(1, 21247263), (3, 7082421), (9, 2360807), (17, 1249839), (19, 1118277), (51, 416613), (57, 372759), (153, 138871), (171, 124253), (323, 65781), (969, 21927), (2907, 7309)]