21546987

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2521}}^1$

素因数の和:2579

約数の個数: 32

約数和(自身を含む): 36801024

約数和(自身を除く): 15254037

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 231, 259, 407, 777, 1221, 2521, 2849, 7563, 8547, 17647, 27731, 52941, 83193, 93277, 194117, 279831, 582351, 652939, 1026047, 1958817, 3078141, 7182329, 21546987]

約数ペア:

[(1, 21546987), (3, 7182329), (7, 3078141), (11, 1958817), (21, 1026047), (33, 652939), (37, 582351), (77, 279831), (111, 194117), (231, 93277), (259, 83193), (407, 52941), (777, 27731), (1221, 17647), (2521, 8547), (2849, 7563)]