256440961

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{1637}}^1$

素因数の和:1813

約数の個数: 24

約数和(自身を含む): 313709760

約数和(自身を除く): 57268799

約数列:

[1, 7, 23, 49, 139, 161, 973, 1127, 1637, 3197, 6811, 11459, 22379, 37651, 80213, 156653, 227543, 263557, 1592801, 1844899, 5233489, 11149607, 36634423, 256440961]

約数ペア:

[(1, 256440961), (7, 36634423), (23, 11149607), (49, 5233489), (139, 1844899), (161, 1592801), (973, 263557), (1127, 227543), (1637, 156653), (3197, 80213), (6811, 37651), (11459, 22379)]