21757054

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:376

約数の個数: 32

約数和(自身を含む): 36938880

約数和(自身を除く): 15181826

約数列:

[1, 2, 11, 22, 43, 86, 109, 211, 218, 422, 473, 946, 1199, 2321, 2398, 4642, 4687, 9073, 9374, 18146, 22999, 45998, 51557, 99803, 103114, 199606, 252989, 505978, 988957, 1977914, 10878527, 21757054]

約数ペア:

[(1, 21757054), (2, 10878527), (11, 1977914), (22, 988957), (43, 505978), (86, 252989), (109, 199606), (211, 103114), (218, 99803), (422, 51557), (473, 45998), (946, 22999), (1199, 18146), (2321, 9374), (2398, 9073), (4642, 4687)]