18121940

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{1093}}^1$

素因数の和:1931

約数の個数: 24

約数和(自身を含む): 38136840

約数和(自身を除く): 20014900

約数列:

[1, 2, 4, 5, 10, 20, 829, 1093, 1658, 2186, 3316, 4145, 4372, 5465, 8290, 10930, 16580, 21860, 906097, 1812194, 3624388, 4530485, 9060970, 18121940]

約数ペア:

[(1, 18121940), (2, 9060970), (4, 4530485), (5, 3624388), (10, 1812194), (20, 906097), (829, 21860), (1093, 16580), (1658, 10930), (2186, 8290), (3316, 5465), (4145, 4372)]