28405580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1481}}^1$

素因数の和:1634

約数の個数: 48

約数和(自身を含む): 68717376

約数和(自身を除く): 40311796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1370, 1481, 1918, 2740, 2962, 3836, 4795, 5924, 7405, 9590, 10367, 14810, 19180, 20734, 29620, 41468, 51835, 103670, 202897, 207340, 405794, 811588, 1014485, 1420279, 2028970, 2840558, 4057940, 5681116, 7101395, 14202790, 28405580]

約数ペア:

[(1, 28405580), (2, 14202790), (4, 7101395), (5, 5681116), (7, 4057940), (10, 2840558), (14, 2028970), (20, 1420279), (28, 1014485), (35, 811588), (70, 405794), (137, 207340), (140, 202897), (274, 103670), (548, 51835), (685, 41468), (959, 29620), (1370, 20734), (1481, 19180), (1918, 14810), (2740, 10367), (2962, 9590), (3836, 7405), (4795, 5924)]