2691521

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:106

約数の個数: 20

約数和(自身を含む): 3361200

約数和(自身を除く): 669679

約数列:

[1, 7, 19, 49, 59, 133, 343, 413, 931, 1121, 2401, 2891, 6517, 7847, 20237, 45619, 54929, 141659, 384503, 2691521]

約数ペア:

[(1, 2691521), (7, 384503), (19, 141659), (49, 54929), (59, 45619), (133, 20237), (343, 7847), (413, 6517), (931, 2891), (1121, 2401)]