21721223

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{761}}^1$

素因数の和:874

約数の個数: 16

約数和(自身を含む): 24359616

約数和(自身を除く): 2638393

約数列:

[1, 17, 23, 73, 391, 761, 1241, 1679, 12937, 17503, 28543, 55553, 297551, 944401, 1277719, 21721223]

約数ペア:

[(1, 21721223), (17, 1277719), (23, 944401), (73, 297551), (391, 55553), (761, 28543), (1241, 17503), (1679, 12937)]