18996873

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1063}}^1$

素因数の和:1133

約数の個数: 32

約数和(自身を含む): 31051776

約数和(自身を除く): 12054903

約数列:

[1, 3, 7, 21, 23, 37, 69, 111, 161, 259, 483, 777, 851, 1063, 2553, 3189, 5957, 7441, 17871, 22323, 24449, 39331, 73347, 117993, 171143, 275317, 513429, 825951, 904613, 2713839, 6332291, 18996873]

約数ペア:

[(1, 18996873), (3, 6332291), (7, 2713839), (21, 904613), (23, 825951), (37, 513429), (69, 275317), (111, 171143), (161, 117993), (259, 73347), (483, 39331), (777, 24449), (851, 22323), (1063, 17871), (2553, 7441), (3189, 5957)]