251017420

素因数分解:

$2^2\times 5^1\times {\mathrm{2221}}^1\times {\mathrm{5651}}^1$

素因数の和:7881

約数の個数: 24

約数和(自身を含む): 527467248

約数和(自身を除く): 276449828

約数列:

[1, 2, 4, 5, 10, 20, 2221, 4442, 5651, 8884, 11105, 11302, 22210, 22604, 28255, 44420, 56510, 113020, 12550871, 25101742, 50203484, 62754355, 125508710, 251017420]

約数ペア:

[(1, 251017420), (2, 125508710), (4, 62754355), (5, 50203484), (10, 25101742), (20, 12550871), (2221, 113020), (4442, 56510), (5651, 44420), (8884, 28255), (11105, 22604), (11302, 22210)]