19894567

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{6983}}^1$

素因数の和:7038

約数の個数: 16

約数和(自身を含む): 25477632

約数和(自身を除く): 5583065

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 6983, 48881, 76813, 258371, 537691, 1808597, 2842081, 19894567]

約数ペア:

[(1, 19894567), (7, 2842081), (11, 1808597), (37, 537691), (77, 258371), (259, 76813), (407, 48881), (2849, 6983)]