39721960

素因数分解:

$2^3\times 5^1\times {\mathrm{993049}}^1$

素因数の和:993060

約数の個数: 16

約数和(自身を含む): 89374500

約数和(自身を除く): 49652540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 993049, 1986098, 3972196, 4965245, 7944392, 9930490, 19860980, 39721960]

約数ペア:

[(1, 39721960), (2, 19860980), (4, 9930490), (5, 7944392), (8, 4965245), (10, 3972196), (20, 1986098), (40, 993049)]