2020454960

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{126913}}^1$

素因数の和:127125

約数の個数: 40

約数和(自身を含む): 4721200800

約数和(自身を除く): 2700745840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 7960, 15920, 126913, 253826, 507652, 634565, 1015304, 1269130, 2030608, 2538260, 5076520, 10153040, 25255687, 50511374, 101022748, 126278435, 202045496, 252556870, 404090992, 505113740, 1010227480, 2020454960]

約数ペア:

[(1, 2020454960), (2, 1010227480), (4, 505113740), (5, 404090992), (8, 252556870), (10, 202045496), (16, 126278435), (20, 101022748), (40, 50511374), (80, 25255687), (199, 10153040), (398, 5076520), (796, 2538260), (995, 2030608), (1592, 1269130), (1990, 1015304), (3184, 634565), (3980, 507652), (7960, 253826), (15920, 126913)]