21565401

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2957}}^1$

素因数の和:3001

約数の個数: 32

約数和(自身を含む): 35779968

約数和(自身を除く): 14214567

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 143, 187, 221, 429, 561, 663, 2431, 2957, 7293, 8871, 32527, 38441, 50269, 97581, 115323, 150807, 422851, 552959, 653497, 1268553, 1658877, 1960491, 7188467, 21565401]

約数ペア:

[(1, 21565401), (3, 7188467), (11, 1960491), (13, 1658877), (17, 1268553), (33, 653497), (39, 552959), (51, 422851), (143, 150807), (187, 115323), (221, 97581), (429, 50269), (561, 38441), (663, 32527), (2431, 8871), (2957, 7293)]