51513785

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 66908160

約数和(自身を除く): 15394375

約数列:

[1, 5, 31, 43, 59, 131, 155, 215, 295, 655, 1333, 1829, 2537, 4061, 5633, 6665, 7729, 9145, 12685, 20305, 28165, 38645, 78647, 174623, 239599, 332347, 393235, 873115, 1197995, 1661735, 10302757, 51513785]

約数ペア:

[(1, 51513785), (5, 10302757), (31, 1661735), (43, 1197995), (59, 873115), (131, 393235), (155, 332347), (215, 239599), (295, 174623), (655, 78647), (1333, 38645), (1829, 28165), (2537, 20305), (4061, 12685), (5633, 9145), (6665, 7729)]