21519797

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{797}}^1$

素因数の和:908

約数の個数: 16

約数和(自身を含む): 24310272

約数和(自身を除く): 2790475

約数列:

[1, 13, 31, 67, 403, 797, 871, 2077, 10361, 24707, 27001, 53399, 321191, 694187, 1655369, 21519797]

約数ペア:

[(1, 21519797), (13, 1655369), (31, 694187), (67, 321191), (403, 53399), (797, 27001), (871, 24707), (2077, 10361)]