388637361

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{18637}}^1$

素因数の和:18981

約数の個数: 24

約数和(自身を含む): 643532864

約数和(自身を除く): 254895503

約数列:

[1, 3, 7, 9, 21, 63, 331, 993, 2317, 2979, 6951, 18637, 20853, 55911, 130459, 167733, 391377, 1174131, 6168847, 18506541, 43181929, 55519623, 129545787, 388637361]

約数ペア:

[(1, 388637361), (3, 129545787), (7, 55519623), (9, 43181929), (21, 18506541), (63, 6168847), (331, 1174131), (993, 391377), (2317, 167733), (2979, 130459), (6951, 55911), (18637, 20853)]