81528755

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{503}}^1$

素因数の和:947

約数の個数: 32

約数和(自身を含む): 122508288

約数和(自身を除く): 40979533

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 421, 503, 2105, 2515, 2947, 3521, 4631, 5533, 14735, 17605, 23155, 27665, 32417, 38731, 162085, 193655, 211763, 1058815, 1482341, 2329393, 7411705, 11646965, 16305751, 81528755]

約数ペア:

[(1, 81528755), (5, 16305751), (7, 11646965), (11, 7411705), (35, 2329393), (55, 1482341), (77, 1058815), (385, 211763), (421, 193655), (503, 162085), (2105, 38731), (2515, 32417), (2947, 27665), (3521, 23155), (4631, 17605), (5533, 14735)]