20808280844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{489791}}^1$

素因数の和:489870

約数の個数: 48

約数和(自身を含む): 42239662080

約数和(自身を除く): 21431381236

約数列:

[1, 2, 4, 13, 19, 26, 38, 43, 52, 76, 86, 172, 247, 494, 559, 817, 988, 1118, 1634, 2236, 3268, 10621, 21242, 42484, 489791, 979582, 1959164, 6367283, 9306029, 12734566, 18612058, 21061013, 25469132, 37224116, 42122026, 84244052, 120978377, 241956754, 273793169, 400159247, 483913508, 547586338, 800318494, 1095172676, 1600636988, 5202070211, 10404140422, 20808280844]

約数ペア:

[(1, 20808280844), (2, 10404140422), (4, 5202070211), (13, 1600636988), (19, 1095172676), (26, 800318494), (38, 547586338), (43, 483913508), (52, 400159247), (76, 273793169), (86, 241956754), (172, 120978377), (247, 84244052), (494, 42122026), (559, 37224116), (817, 25469132), (988, 21061013), (1118, 18612058), (1634, 12734566), (2236, 9306029), (3268, 6367283), (10621, 1959164), (21242, 979582), (42484, 489791)]