18690395

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 25505280

約数和(自身を除く): 6814885

約数列:

[1, 5, 17, 19, 71, 85, 95, 163, 323, 355, 815, 1207, 1349, 1615, 2771, 3097, 6035, 6745, 11573, 13855, 15485, 22933, 52649, 57865, 114665, 196741, 219887, 263245, 983705, 1099435, 3738079, 18690395]

約数ペア:

[(1, 18690395), (5, 3738079), (17, 1099435), (19, 983705), (71, 263245), (85, 219887), (95, 196741), (163, 114665), (323, 57865), (355, 52649), (815, 22933), (1207, 15485), (1349, 13855), (1615, 11573), (2771, 6745), (3097, 6035)]