21272253

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{2411}}^1$

素因数の和:2604

約数の個数: 16

約数和(自身を含む): 30217536

約数和(自身を除く): 8945283

約数列:

[1, 3, 17, 51, 173, 519, 2411, 2941, 7233, 8823, 40987, 122961, 417103, 1251309, 7090751, 21272253]

約数ペア:

[(1, 21272253), (3, 7090751), (17, 1251309), (51, 417103), (173, 122961), (519, 40987), (2411, 8823), (2941, 7233)]