20891430145

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1\times {\mathrm{8087}}^1$

素因数の和:8565

約数の個数: 32

約数和(自身を含む): 26834042880

約数和(自身を除く): 5942612735

約数列:

[1, 5, 19, 71, 95, 355, 383, 1349, 1915, 6745, 7277, 8087, 27193, 36385, 40435, 135965, 153653, 516667, 574177, 768265, 2583335, 2870885, 3097321, 10909363, 15486605, 54546815, 58849099, 219909791, 294245495, 1099548955, 4178286029, 20891430145]

約数ペア:

[(1, 20891430145), (5, 4178286029), (19, 1099548955), (71, 294245495), (95, 219909791), (355, 58849099), (383, 54546815), (1349, 15486605), (1915, 10909363), (6745, 3097321), (7277, 2870885), (8087, 2583335), (27193, 768265), (36385, 574177), (40435, 516667), (135965, 153653)]