21376605

素因数分解:

$3^1\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{1217}}^1$

素因数の和:2396

約数の個数: 16

約数和(自身を含む): 34259904

約数和(自身を除く): 12883299

約数列:

[1, 3, 5, 15, 1171, 1217, 3513, 3651, 5855, 6085, 17565, 18255, 1425107, 4275321, 7125535, 21376605]

約数ペア:

[(1, 21376605), (3, 7125535), (5, 4275321), (15, 1425107), (1171, 18255), (1217, 17565), (3513, 6085), (3651, 5855)]