638896480

素因数分解:

$2^5\times 5^1\times {\mathrm{3993103}}^1$

素因数の和:3993118

約数の個数: 24

約数和(自身を含む): 1509393312

約数和(自身を除く): 870496832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 3993103, 7986206, 15972412, 19965515, 31944824, 39931030, 63889648, 79862060, 127779296, 159724120, 319448240, 638896480]

約数ペア:

[(1, 638896480), (2, 319448240), (4, 159724120), (5, 127779296), (8, 79862060), (10, 63889648), (16, 39931030), (20, 31944824), (32, 19965515), (40, 15972412), (80, 7986206), (160, 3993103)]