21005387

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{5591}}^1$

素因数の和:5638

約数の個数: 12

約数和(自身を含む): 24034416

約数和(自身を除く): 3029029

約数列:

[1, 13, 17, 221, 289, 3757, 5591, 72683, 95047, 1235611, 1615799, 21005387]

約数ペア:

[(1, 21005387), (13, 1615799), (17, 1235611), (221, 95047), (289, 72683), (3757, 5591)]