28144780

素因数分解:

$2^2\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{1381}}^1$

素因数の和:2409

約数の個数: 24

約数和(自身を含む): 59204880

約数和(自身を除く): 31060100

約数列:

[1, 2, 4, 5, 10, 20, 1019, 1381, 2038, 2762, 4076, 5095, 5524, 6905, 10190, 13810, 20380, 27620, 1407239, 2814478, 5628956, 7036195, 14072390, 28144780]

約数ペア:

[(1, 28144780), (2, 14072390), (4, 7036195), (5, 5628956), (10, 2814478), (20, 1407239), (1019, 27620), (1381, 20380), (2038, 13810), (2762, 10190), (4076, 6905), (5095, 5524)]