720402640

素因数分解:

$2^4\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{6911}}^1$

素因数の和:8227

約数の個数: 40

約数和(自身を含む): 1676464128

約数和(自身を除く): 956061488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1303, 2606, 5212, 6515, 6911, 10424, 13030, 13822, 20848, 26060, 27644, 34555, 52120, 55288, 69110, 104240, 110576, 138220, 276440, 552880, 9005033, 18010066, 36020132, 45025165, 72040264, 90050330, 144080528, 180100660, 360201320, 720402640]

約数ペア:

[(1, 720402640), (2, 360201320), (4, 180100660), (5, 144080528), (8, 90050330), (10, 72040264), (16, 45025165), (20, 36020132), (40, 18010066), (80, 9005033), (1303, 552880), (2606, 276440), (5212, 138220), (6515, 110576), (6911, 104240), (10424, 69110), (13030, 55288), (13822, 52120), (20848, 34555), (26060, 27644)]