256220144

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{372413}}^1$

素因数の和:372464

約数の個数: 20

約数和(自身を含む): 507972696

約数和(自身を除く): 251752552

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 372413, 744826, 1489652, 2979304, 5958608, 16013759, 32027518, 64055036, 128110072, 256220144]

約数ペア:

[(1, 256220144), (2, 128110072), (4, 64055036), (8, 32027518), (16, 16013759), (43, 5958608), (86, 2979304), (172, 1489652), (344, 744826), (688, 372413)]