21530971

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{14717}}^1$

素因数の和:14754

約数の個数: 16

約数和(自身を含む): 28258560

約数和(自身を除く): 6727589

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 14717, 103019, 161887, 279623, 1133209, 1957361, 3075853, 21530971]

約数ペア:

[(1, 21530971), (7, 3075853), (11, 1957361), (19, 1133209), (77, 279623), (133, 161887), (209, 103019), (1463, 14717)]