21659785

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{617}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 32037120

約数和(自身を除く): 10377335

約数列:

[1, 5, 7, 17, 35, 59, 85, 119, 295, 413, 595, 617, 1003, 2065, 3085, 4319, 5015, 7021, 10489, 21595, 35105, 36403, 52445, 73423, 182015, 254821, 367115, 618851, 1274105, 3094255, 4331957, 21659785]

約数ペア:

[(1, 21659785), (5, 4331957), (7, 3094255), (17, 1274105), (35, 618851), (59, 367115), (85, 254821), (119, 182015), (295, 73423), (413, 52445), (595, 36403), (617, 35105), (1003, 21595), (2065, 10489), (3085, 7021), (4319, 5015)]