21488516

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8623}}^1$

素因数の和:8723

約数の個数: 24

約数和(自身を含む): 43464960

約数和(自身を除く): 21976444

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8623, 17246, 34492, 60361, 120722, 241444, 767447, 1534894, 3069788, 5372129, 10744258, 21488516]

約数ペア:

[(1, 21488516), (2, 10744258), (4, 5372129), (7, 3069788), (14, 1534894), (28, 767447), (89, 241444), (178, 120722), (356, 60361), (623, 34492), (1246, 17246), (2492, 8623)]