21116403

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1451}}^1$

素因数の和:1485

約数の個数: 48

約数和(自身を含む): 39726720

約数和(自身を除く): 18610317

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 147, 189, 231, 297, 441, 539, 693, 1323, 1451, 1617, 2079, 4353, 4851, 10157, 13059, 14553, 15961, 30471, 39177, 47883, 71099, 91413, 111727, 143649, 213297, 274239, 335181, 430947, 639891, 782089, 1005543, 1919673, 2346267, 3016629, 7038801, 21116403]

約数ペア:

[(1, 21116403), (3, 7038801), (7, 3016629), (9, 2346267), (11, 1919673), (21, 1005543), (27, 782089), (33, 639891), (49, 430947), (63, 335181), (77, 274239), (99, 213297), (147, 143649), (189, 111727), (231, 91413), (297, 71099), (441, 47883), (539, 39177), (693, 30471), (1323, 15961), (1451, 14553), (1617, 13059), (2079, 10157), (4353, 4851)]