21211223

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{3659}}^1$

素因数の和:3718

約数の個数: 16

約数和(自身を含む): 25297920

約数和(自身を除く): 4086697

約数列:

[1, 11, 17, 31, 187, 341, 527, 3659, 5797, 40249, 62203, 113429, 684233, 1247719, 1928293, 21211223]

約数ペア:

[(1, 21211223), (11, 1928293), (17, 1247719), (31, 684233), (187, 113429), (341, 62203), (527, 40249), (3659, 5797)]