21249095

素因数分解:

$5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2017}}^1$

素因数の和:2079

約数の個数: 24

約数和(自身を含む): 30366864

約数和(自身を除く): 9117769

約数列:

[1, 5, 7, 35, 43, 49, 215, 245, 301, 1505, 2017, 2107, 10085, 10535, 14119, 70595, 86731, 98833, 433655, 494165, 607117, 3035585, 4249819, 21249095]

約数ペア:

[(1, 21249095), (5, 4249819), (7, 3035585), (35, 607117), (43, 494165), (49, 433655), (215, 98833), (245, 86731), (301, 70595), (1505, 14119), (2017, 10535), (2107, 10085)]