21971408

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{33493}}^1$

素因数の和:33542

約数の個数: 20

約数和(自身を含む): 43609188

約数和(自身を除く): 21637780

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 33493, 66986, 133972, 267944, 535888, 1373213, 2746426, 5492852, 10985704, 21971408]

約数ペア:

[(1, 21971408), (2, 10985704), (4, 5492852), (8, 2746426), (16, 1373213), (41, 535888), (82, 267944), (164, 133972), (328, 66986), (656, 33493)]