31402040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18257}}^1$

素因数の和:18311

約数の個数: 32

約数和(自身を含む): 72301680

約数和(自身を除く): 40899640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18257, 36514, 73028, 91285, 146056, 182570, 365140, 730280, 785051, 1570102, 3140204, 3925255, 6280408, 7850510, 15701020, 31402040]

約数ペア:

[(1, 31402040), (2, 15701020), (4, 7850510), (5, 6280408), (8, 3925255), (10, 3140204), (20, 1570102), (40, 785051), (43, 730280), (86, 365140), (172, 182570), (215, 146056), (344, 91285), (430, 73028), (860, 36514), (1720, 18257)]