81139751

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{2503}}^1$

素因数の和:2942

約数の個数: 16

約数和(自身を含む): 101442048

約数和(自身を除く): 20302297

約数列:

[1, 7, 11, 77, 421, 2503, 2947, 4631, 17521, 27533, 32417, 192731, 1053763, 7376341, 11591393, 81139751]

約数ペア:

[(1, 81139751), (7, 11591393), (11, 7376341), (77, 1053763), (421, 192731), (2503, 32417), (2947, 27533), (4631, 17521)]