19928013

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{6827}}^1$

素因数の和:6976

約数の個数: 16

約数和(自身を含む): 30589440

約数和(自身を除く): 10661427

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 6827, 20481, 47789, 143367, 948953, 2846859, 6642671, 19928013]

約数ペア:

[(1, 19928013), (3, 6642671), (7, 2846859), (21, 948953), (139, 143367), (417, 47789), (973, 20481), (2919, 6827)]