18080307

素因数分解:

$3^3\times 7^1\times {\mathrm{271}}^1\times {\mathrm{353}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 30812160

約数和(自身を除く): 12731853

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 271, 353, 813, 1059, 1897, 2439, 2471, 3177, 5691, 7317, 7413, 9531, 17073, 22239, 51219, 66717, 95663, 286989, 669641, 860967, 2008923, 2582901, 6026769, 18080307]

約数ペア:

[(1, 18080307), (3, 6026769), (7, 2582901), (9, 2008923), (21, 860967), (27, 669641), (63, 286989), (189, 95663), (271, 66717), (353, 51219), (813, 22239), (1059, 17073), (1897, 9531), (2439, 7413), (2471, 7317), (3177, 5691)]