21681413

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1439}}^1$

素因数の和:1532

約数の個数: 16

約数和(自身を含む): 24998400

約数和(自身を除く): 3316987

約数列:

[1, 13, 19, 61, 247, 793, 1159, 1439, 15067, 18707, 27341, 87779, 355433, 1141127, 1667801, 21681413]

約数ペア:

[(1, 21681413), (13, 1667801), (19, 1141127), (61, 355433), (247, 87779), (793, 27341), (1159, 18707), (1439, 15067)]