16278725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{797}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 21769440

約数和(自身を除く): 5490715

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 797, 817, 1075, 3985, 4085, 15143, 19925, 20425, 34271, 75715, 171355, 378575, 651149, 856775, 3255745, 16278725]

約数ペア:

[(1, 16278725), (5, 3255745), (19, 856775), (25, 651149), (43, 378575), (95, 171355), (215, 75715), (475, 34271), (797, 20425), (817, 19925), (1075, 15143), (3985, 4085)]