21685317

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{1669}}^1$

素因数の和:1804

約数の個数: 16

約数和(自身を含む): 29819520

約数和(自身を除く): 8134203

約数列:

[1, 3, 61, 71, 183, 213, 1669, 4331, 5007, 12993, 101809, 118499, 305427, 355497, 7228439, 21685317]

約数ペア:

[(1, 21685317), (3, 7228439), (61, 355497), (71, 305427), (183, 118499), (213, 101809), (1669, 12993), (4331, 5007)]