21478391

素因数分解:

${\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:422

約数の個数: 16

約数和(自身を含む): 24062208

約数和(自身を除く): 2583817

約数列:

[1, 11, 67, 151, 193, 737, 1661, 2123, 10117, 12931, 29143, 111287, 142241, 320573, 1952581, 21478391]

約数ペア:

[(1, 21478391), (11, 1952581), (67, 320573), (151, 142241), (193, 111287), (737, 29143), (1661, 12931), (2123, 10117)]