18020980

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{6577}}^1$

素因数の和:6723

約数の個数: 24

約数和(自身を含む): 38126088

約数和(自身を除く): 20105108

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 6577, 13154, 26308, 32885, 65770, 131540, 901049, 1802098, 3604196, 4505245, 9010490, 18020980]

約数ペア:

[(1, 18020980), (2, 9010490), (4, 4505245), (5, 3604196), (10, 1802098), (20, 901049), (137, 131540), (274, 65770), (548, 32885), (685, 26308), (1370, 13154), (2740, 6577)]