21301137

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{613}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 37547328

約数和(自身を除く): 16246191

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 143, 243, 297, 351, 429, 613, 891, 1053, 1287, 1839, 2673, 3159, 3861, 5517, 6743, 7969, 11583, 16551, 20229, 23907, 34749, 49653, 60687, 71721, 87659, 148959, 182061, 215163, 262977, 546183, 645489, 788931, 1638549, 1936467, 2366793, 7100379, 21301137]

約数ペア:

[(1, 21301137), (3, 7100379), (9, 2366793), (11, 1936467), (13, 1638549), (27, 788931), (33, 645489), (39, 546183), (81, 262977), (99, 215163), (117, 182061), (143, 148959), (243, 87659), (297, 71721), (351, 60687), (429, 49653), (613, 34749), (891, 23907), (1053, 20229), (1287, 16551), (1839, 11583), (2673, 7969), (3159, 6743), (3861, 5517)]