21440341

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1423}}^1$

素因数の和:1516

約数の個数: 16

約数和(自身を含む): 24720640

約数和(自身を除く): 3280299

約数列:

[1, 13, 19, 61, 247, 793, 1159, 1423, 15067, 18499, 27037, 86803, 351481, 1128439, 1649257, 21440341]

約数ペア:

[(1, 21440341), (13, 1649257), (19, 1128439), (61, 351481), (247, 86803), (793, 27037), (1159, 18499), (1423, 15067)]