21905079

素因数分解:

$3^1\times 7^1\times {\mathrm{587}}^1\times {\mathrm{1777}}^1$

素因数の和:2374

約数の個数: 16

約数和(自身を含む): 33454848

約数和(自身を除く): 11549769

約数列:

[1, 3, 7, 21, 587, 1761, 1777, 4109, 5331, 12327, 12439, 37317, 1043099, 3129297, 7301693, 21905079]

約数ペア:

[(1, 21905079), (3, 7301693), (7, 3129297), (21, 1043099), (587, 37317), (1761, 12439), (1777, 12327), (4109, 5331)]