25585720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7187}}^1$

素因数の和:7287

約数の個数: 32

約数和(自身を含む): 58222800

約数和(自身を除く): 32637080

約数列:

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

約数ペア:

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