21253544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{204361}}^1$

素因数の和:204380

約数の個数: 16

約数和(自身を含む): 42916020

約数和(自身を除く): 21662476

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 204361, 408722, 817444, 1634888, 2656693, 5313386, 10626772, 21253544]

約数ペア:

[(1, 21253544), (2, 10626772), (4, 5313386), (8, 2656693), (13, 1634888), (26, 817444), (52, 408722), (104, 204361)]