51171440

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7187}}^1$

素因数の和:7289

約数の個数: 40

約数和(自身を含む): 120327120

約数和(自身を除く): 69155680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 7187, 14374, 28748, 35935, 57496, 71870, 114992, 143740, 287480, 574960, 639643, 1279286, 2558572, 3198215, 5117144, 6396430, 10234288, 12792860, 25585720, 51171440]

約数ペア:

[(1, 51171440), (2, 25585720), (4, 12792860), (5, 10234288), (8, 6396430), (10, 5117144), (16, 3198215), (20, 2558572), (40, 1279286), (80, 639643), (89, 574960), (178, 287480), (356, 143740), (445, 114992), (712, 71870), (890, 57496), (1424, 35935), (1780, 28748), (3560, 14374), (7120, 7187)]