27770000

素因数分解:

$2^4\times 5^4\times {\mathrm{2777}}^1$

素因数の和:2805

約数の個数: 50

約数和(自身を含む): 67258158

約数和(自身を除く): 39488158

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 2777, 5000, 5554, 10000, 11108, 13885, 22216, 27770, 44432, 55540, 69425, 111080, 138850, 222160, 277700, 347125, 555400, 694250, 1110800, 1388500, 1735625, 2777000, 3471250, 5554000, 6942500, 13885000, 27770000]

約数ペア:

[(1, 27770000), (2, 13885000), (4, 6942500), (5, 5554000), (8, 3471250), (10, 2777000), (16, 1735625), (20, 1388500), (25, 1110800), (40, 694250), (50, 555400), (80, 347125), (100, 277700), (125, 222160), (200, 138850), (250, 111080), (400, 69425), (500, 55540), (625, 44432), (1000, 27770), (1250, 22216), (2000, 13885), (2500, 11108), (2777, 10000), (5000, 5554)]