21726861

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 33264000

約数和(自身を除く): 11537139

約数列:

[1, 3, 13, 19, 39, 57, 109, 247, 269, 327, 741, 807, 1417, 2071, 3497, 4251, 5111, 6213, 10491, 15333, 26923, 29321, 66443, 80769, 87963, 199329, 381173, 557099, 1143519, 1671297, 7242287, 21726861]

約数ペア:

[(1, 21726861), (3, 7242287), (13, 1671297), (19, 1143519), (39, 557099), (57, 381173), (109, 199329), (247, 87963), (269, 80769), (327, 66443), (741, 29321), (807, 26923), (1417, 15333), (2071, 10491), (3497, 6213), (4251, 5111)]