1282160020

素因数分解:

$2^2\times 5^1\times {\mathrm{64108001}}^1$

素因数の和:64108010

約数の個数: 12

約数和(自身を含む): 2692536084

約数和(自身を除く): 1410376064

約数列:

[1, 2, 4, 5, 10, 20, 64108001, 128216002, 256432004, 320540005, 641080010, 1282160020]

約数ペア:

[(1, 1282160020), (2, 641080010), (4, 320540005), (5, 256432004), (10, 128216002), (20, 64108001)]