21051373

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1907}}^1$

素因数の和:2016

約数の個数: 16

約数和(自身を含む): 25643520

約数和(自身を除く): 4592147

約数列:

[1, 7, 19, 83, 133, 581, 1577, 1907, 11039, 13349, 36233, 158281, 253631, 1107967, 3007339, 21051373]

約数ペア:

[(1, 21051373), (7, 3007339), (19, 1107967), (83, 253631), (133, 158281), (581, 36233), (1577, 13349), (1907, 11039)]