20889265

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:277

約数の個数: 24

約数和(自身を含む): 26993088

約数和(自身を除く): 6103823

約数列:

[1, 5, 19, 71, 95, 163, 355, 361, 815, 1349, 1805, 3097, 6745, 11573, 15485, 25631, 57865, 58843, 128155, 219887, 294215, 1099435, 4177853, 20889265]

約数ペア:

[(1, 20889265), (5, 4177853), (19, 1099435), (71, 294215), (95, 219887), (163, 128155), (355, 58843), (361, 57865), (815, 25631), (1349, 15485), (1805, 11573), (3097, 6745)]