21249371

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8741}}^1$

素因数の和:8782

約数の個数: 16

約数和(自身を含む): 26435808

約数和(自身を除く): 5186437

約数列:

[1, 11, 13, 17, 143, 187, 221, 2431, 8741, 96151, 113633, 148597, 1249963, 1634567, 1931761, 21249371]

約数ペア:

[(1, 21249371), (11, 1931761), (13, 1634567), (17, 1249963), (143, 148597), (187, 113633), (221, 96151), (2431, 8741)]