25801420

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{4591}}^1$

素因数の和:4881

約数の個数: 24

約数和(自身を含む): 54387648

約数和(自身を除く): 28586228

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 4591, 5620, 9182, 18364, 22955, 45910, 91820, 1290071, 2580142, 5160284, 6450355, 12900710, 25801420]

約数ペア:

[(1, 25801420), (2, 12900710), (4, 6450355), (5, 5160284), (10, 2580142), (20, 1290071), (281, 91820), (562, 45910), (1124, 22955), (1405, 18364), (2810, 9182), (4591, 5620)]