81372040

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43283}}^1$

素因数の和:43341

約数の個数: 32

約数和(自身を含む): 186986880

約数和(自身を除く): 105614840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 43283, 86566, 173132, 216415, 346264, 432830, 865660, 1731320, 2034301, 4068602, 8137204, 10171505, 16274408, 20343010, 40686020, 81372040]

約数ペア:

[(1, 81372040), (2, 40686020), (4, 20343010), (5, 16274408), (8, 10171505), (10, 8137204), (20, 4068602), (40, 2034301), (47, 1731320), (94, 865660), (188, 432830), (235, 346264), (376, 216415), (470, 173132), (940, 86566), (1880, 43283)]