205102000

素因数分解:

$2^4\times 5^3\times {\mathrm{102551}}^1$

素因数の和:102574

約数の個数: 40

約数和(自身を含む): 495941472

約数和(自身を除く): 290839472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 102551, 205102, 410204, 512755, 820408, 1025510, 1640816, 2051020, 2563775, 4102040, 5127550, 8204080, 10255100, 12818875, 20510200, 25637750, 41020400, 51275500, 102551000, 205102000]

約数ペア:

[(1, 205102000), (2, 102551000), (4, 51275500), (5, 41020400), (8, 25637750), (10, 20510200), (16, 12818875), (20, 10255100), (25, 8204080), (40, 5127550), (50, 4102040), (80, 2563775), (100, 2051020), (125, 1640816), (200, 1025510), (250, 820408), (400, 512755), (500, 410204), (1000, 205102), (2000, 102551)]