81700040

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4549}}^1$

素因数の和:5009

約数の個数: 32

約数和(自身を含む): 184275000

約数和(自身を除く): 102574960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4490, 4549, 8980, 9098, 17960, 18196, 22745, 36392, 45490, 90980, 181960, 2042501, 4085002, 8170004, 10212505, 16340008, 20425010, 40850020, 81700040]

約数ペア:

[(1, 81700040), (2, 40850020), (4, 20425010), (5, 16340008), (8, 10212505), (10, 8170004), (20, 4085002), (40, 2042501), (449, 181960), (898, 90980), (1796, 45490), (2245, 36392), (3592, 22745), (4490, 18196), (4549, 17960), (8980, 9098)]