81238352

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:388

約数の個数: 80

約数和(自身を含む): 179655168

約数和(自身を除く): 98416816

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 43, 52, 62, 86, 104, 124, 172, 208, 248, 293, 344, 403, 496, 559, 586, 688, 806, 1118, 1172, 1333, 1612, 2236, 2344, 2666, 3224, 3809, 4472, 4688, 5332, 6448, 7618, 8944, 9083, 10664, 12599, 15236, 17329, 18166, 21328, 25198, 30472, 34658, 36332, 50396, 60944, 69316, 72664, 100792, 118079, 138632, 145328, 163787, 201584, 236158, 277264, 327574, 390569, 472316, 655148, 781138, 944632, 1310296, 1562276, 1889264, 2620592, 3124552, 5077397, 6249104, 10154794, 20309588, 40619176, 81238352]

約数ペア:

[(1, 81238352), (2, 40619176), (4, 20309588), (8, 10154794), (13, 6249104), (16, 5077397), (26, 3124552), (31, 2620592), (43, 1889264), (52, 1562276), (62, 1310296), (86, 944632), (104, 781138), (124, 655148), (172, 472316), (208, 390569), (248, 327574), (293, 277264), (344, 236158), (403, 201584), (496, 163787), (559, 145328), (586, 138632), (688, 118079), (806, 100792), (1118, 72664), (1172, 69316), (1333, 60944), (1612, 50396), (2236, 36332), (2344, 34658), (2666, 30472), (3224, 25198), (3809, 21328), (4472, 18166), (4688, 17329), (5332, 15236), (6448, 12599), (7618, 10664), (8944, 9083)]