20885000

素因数分解:

$2^3\times 5^4\times {\mathrm{4177}}^1$

素因数の和:4203

約数の個数: 40

約数和(自身を含む): 48945270

約数和(自身を除く): 28060270

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 4177, 5000, 8354, 16708, 20885, 33416, 41770, 83540, 104425, 167080, 208850, 417700, 522125, 835400, 1044250, 2088500, 2610625, 4177000, 5221250, 10442500, 20885000]

約数ペア:

[(1, 20885000), (2, 10442500), (4, 5221250), (5, 4177000), (8, 2610625), (10, 2088500), (20, 1044250), (25, 835400), (40, 522125), (50, 417700), (100, 208850), (125, 167080), (200, 104425), (250, 83540), (500, 41770), (625, 33416), (1000, 20885), (1250, 16708), (2500, 8354), (4177, 5000)]