990280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1303}}^1$

素因数の和:1333

約数の個数: 32

約数和(自身を含む): 2347200

約数和(自身を除く): 1356920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 1303, 2606, 5212, 6515, 10424, 13030, 24757, 26060, 49514, 52120, 99028, 123785, 198056, 247570, 495140, 990280]

約数ペア:

[(1, 990280), (2, 495140), (4, 247570), (5, 198056), (8, 123785), (10, 99028), (19, 52120), (20, 49514), (38, 26060), (40, 24757), (76, 13030), (95, 10424), (152, 6515), (190, 5212), (380, 2606), (760, 1303)]