21044530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161881}}^1$

素因数の和:161901

約数の個数: 16

約数和(自身を含む): 40794264

約数和(自身を除く): 19749734

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161881, 323762, 809405, 1618810, 2104453, 4208906, 10522265, 21044530]

約数ペア:

[(1, 21044530), (2, 10522265), (5, 4208906), (10, 2104453), (13, 1618810), (26, 809405), (65, 323762), (130, 161881)]