40025000

素因数分解:

$2^3\times 5^5\times {\mathrm{1601}}^1$

素因数の和:1632

約数の個数: 48

約数和(自身を含む): 93861180

約数和(自身を除く): 53836180

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 1601, 2500, 3125, 3202, 5000, 6250, 6404, 8005, 12500, 12808, 16010, 25000, 32020, 40025, 64040, 80050, 160100, 200125, 320200, 400250, 800500, 1000625, 1601000, 2001250, 4002500, 5003125, 8005000, 10006250, 20012500, 40025000]

約数ペア:

[(1, 40025000), (2, 20012500), (4, 10006250), (5, 8005000), (8, 5003125), (10, 4002500), (20, 2001250), (25, 1601000), (40, 1000625), (50, 800500), (100, 400250), (125, 320200), (200, 200125), (250, 160100), (500, 80050), (625, 64040), (1000, 40025), (1250, 32020), (1601, 25000), (2500, 16010), (3125, 12808), (3202, 12500), (5000, 8005), (6250, 6404)]