21342719

素因数分解:

${\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{241}}^1$

素因数の和:398

約数の個数: 16

約数和(自身を含む): 23232000

約数和(自身を除く): 1889281

約数列:

[1, 19, 59, 79, 241, 1121, 1501, 4579, 4661, 14219, 19039, 88559, 270161, 361741, 1123301, 21342719]

約数ペア:

[(1, 21342719), (19, 1123301), (59, 361741), (79, 270161), (241, 88559), (1121, 19039), (1501, 14219), (4579, 4661)]