28917791

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 35910000

約数和(自身を除く): 6992209

約数列:

[1, 7, 19, 49, 89, 133, 349, 623, 931, 1691, 2443, 4361, 6631, 11837, 17101, 31061, 46417, 82859, 217427, 324919, 590159, 1521989, 4131113, 28917791]

約数ペア:

[(1, 28917791), (7, 4131113), (19, 1521989), (49, 590159), (89, 324919), (133, 217427), (349, 82859), (623, 46417), (931, 31061), (1691, 17101), (2443, 11837), (4361, 6631)]