8005000

素因数分解:

$2^3\times 5^4\times {\mathrm{1601}}^1$

素因数の和:1627

約数の個数: 40

約数和(自身を含む): 18767430

約数和(自身を除く): 10762430

約数列:

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

約数ペア:

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