9780280

素因数分解:

$2^3\times 5^1\times {\mathrm{244507}}^1$

素因数の和:244518

約数の個数: 16

約数和(自身を含む): 22005720

約数和(自身を除く): 12225440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 244507, 489014, 978028, 1222535, 1956056, 2445070, 4890140, 9780280]

約数ペア:

[(1, 9780280), (2, 4890140), (4, 2445070), (5, 1956056), (8, 1222535), (10, 978028), (20, 489014), (40, 244507)]