200050000

素因数分解:

$2^4\times 5^5\times {\mathrm{4001}}^1$

素因数の和:4034

約数の個数: 60

約数和(自身を含む): 484586172

約数和(自身を除く): 284536172

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, 3125, 4001, 5000, 6250, 8002, 10000, 12500, 16004, 20005, 25000, 32008, 40010, 50000, 64016, 80020, 100025, 160040, 200050, 320080, 400100, 500125, 800200, 1000250, 1600400, 2000500, 2500625, 4001000, 5001250, 8002000, 10002500, 12503125, 20005000, 25006250, 40010000, 50012500, 100025000, 200050000]

約数ペア:

[(1, 200050000), (2, 100025000), (4, 50012500), (5, 40010000), (8, 25006250), (10, 20005000), (16, 12503125), (20, 10002500), (25, 8002000), (40, 5001250), (50, 4001000), (80, 2500625), (100, 2000500), (125, 1600400), (200, 1000250), (250, 800200), (400, 500125), (500, 400100), (625, 320080), (1000, 200050), (1250, 160040), (2000, 100025), (2500, 80020), (3125, 64016), (4001, 50000), (5000, 40010), (6250, 32008), (8002, 25000), (10000, 20005), (12500, 16004)]