9001000

素因数分解:

$2^3\times 5^3\times {\mathrm{9001}}^1$

素因数の和:9022

約数の個数: 32

約数和(自身を含む): 21064680

約数和(自身を除く): 12063680

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 9001, 18002, 36004, 45005, 72008, 90010, 180020, 225025, 360040, 450050, 900100, 1125125, 1800200, 2250250, 4500500, 9001000]

約数ペア:

[(1, 9001000), (2, 4500500), (4, 2250250), (5, 1800200), (8, 1125125), (10, 900100), (20, 450050), (25, 360040), (40, 225025), (50, 180020), (100, 90010), (125, 72008), (200, 45005), (250, 36004), (500, 18002), (1000, 9001)]