20971858

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1\times {\mathrm{853}}^1$

素因数の和:1521

約数の個数: 16

約数和(自身を含む): 33203520

約数和(自身を除く): 12231662

約数列:

[1, 2, 19, 38, 647, 853, 1294, 1706, 12293, 16207, 24586, 32414, 551891, 1103782, 10485929, 20971858]

約数ペア:

[(1, 20971858), (2, 10485929), (19, 1103782), (38, 551891), (647, 32414), (853, 24586), (1294, 16207), (1706, 12293)]