21174231

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 32598720

約数和(自身を除く): 11424489

約数列:

[1, 3, 13, 17, 39, 51, 109, 221, 293, 327, 663, 879, 1417, 1853, 3809, 4251, 4981, 5559, 11427, 14943, 24089, 31937, 64753, 72267, 95811, 194259, 415181, 542929, 1245543, 1628787, 7058077, 21174231]

約数ペア:

[(1, 21174231), (3, 7058077), (13, 1628787), (17, 1245543), (39, 542929), (51, 415181), (109, 194259), (221, 95811), (293, 72267), (327, 64753), (663, 31937), (879, 24089), (1417, 14943), (1853, 11427), (3809, 5559), (4251, 4981)]