28031440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:260

約数の個数: 80

約数和(自身を含む): 68567040

約数和(自身を除く): 40535600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 89, 124, 127, 155, 178, 248, 254, 310, 356, 445, 496, 508, 620, 635, 712, 890, 1016, 1240, 1270, 1424, 1780, 2032, 2480, 2540, 2759, 3560, 3937, 5080, 5518, 7120, 7874, 10160, 11036, 11303, 13795, 15748, 19685, 22072, 22606, 27590, 31496, 39370, 44144, 45212, 55180, 56515, 62992, 78740, 90424, 110360, 113030, 157480, 180848, 220720, 226060, 314960, 350393, 452120, 700786, 904240, 1401572, 1751965, 2803144, 3503930, 5606288, 7007860, 14015720, 28031440]

約数ペア:

[(1, 28031440), (2, 14015720), (4, 7007860), (5, 5606288), (8, 3503930), (10, 2803144), (16, 1751965), (20, 1401572), (31, 904240), (40, 700786), (62, 452120), (80, 350393), (89, 314960), (124, 226060), (127, 220720), (155, 180848), (178, 157480), (248, 113030), (254, 110360), (310, 90424), (356, 78740), (445, 62992), (496, 56515), (508, 55180), (620, 45212), (635, 44144), (712, 39370), (890, 31496), (1016, 27590), (1240, 22606), (1270, 22072), (1424, 19685), (1780, 15748), (2032, 13795), (2480, 11303), (2540, 11036), (2759, 10160), (3560, 7874), (3937, 7120), (5080, 5518)]