21345181

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2447}}^1$

素因数の和:2532

約数の個数: 16

約数和(自身を含む): 25498368

約数和(自身を除く): 4153187

約数列:

[1, 11, 13, 61, 143, 671, 793, 2447, 8723, 26917, 31811, 149267, 349921, 1641937, 1940471, 21345181]

約数ペア:

[(1, 21345181), (11, 1940471), (13, 1641937), (61, 349921), (143, 149267), (671, 31811), (793, 26917), (2447, 8723)]