81195760

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{27431}}^1$

素因数の和:27481

約数の個数: 40

約数和(自身を含む): 193889376

約数和(自身を除く): 112693616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 27431, 54862, 109724, 137155, 219448, 274310, 438896, 548620, 1014947, 1097240, 2029894, 2194480, 4059788, 5074735, 8119576, 10149470, 16239152, 20298940, 40597880, 81195760]

約数ペア:

[(1, 81195760), (2, 40597880), (4, 20298940), (5, 16239152), (8, 10149470), (10, 8119576), (16, 5074735), (20, 4059788), (37, 2194480), (40, 2029894), (74, 1097240), (80, 1014947), (148, 548620), (185, 438896), (296, 274310), (370, 219448), (592, 137155), (740, 109724), (1480, 54862), (2960, 27431)]