20964736

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:363

約数の個数: 64

約数和(自身を含む): 46181520

約数和(自身を除く): 25216784

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 104, 128, 172, 208, 293, 344, 416, 559, 586, 688, 832, 1118, 1172, 1376, 1664, 2236, 2344, 2752, 3809, 4472, 4688, 5504, 7618, 8944, 9376, 12599, 15236, 17888, 18752, 25198, 30472, 35776, 37504, 50396, 60944, 71552, 100792, 121888, 163787, 201584, 243776, 327574, 403168, 487552, 655148, 806336, 1310296, 1612672, 2620592, 5241184, 10482368, 20964736]

約数ペア:

[(1, 20964736), (2, 10482368), (4, 5241184), (8, 2620592), (13, 1612672), (16, 1310296), (26, 806336), (32, 655148), (43, 487552), (52, 403168), (64, 327574), (86, 243776), (104, 201584), (128, 163787), (172, 121888), (208, 100792), (293, 71552), (344, 60944), (416, 50396), (559, 37504), (586, 35776), (688, 30472), (832, 25198), (1118, 18752), (1172, 17888), (1376, 15236), (1664, 12599), (2236, 9376), (2344, 8944), (2752, 7618), (3809, 5504), (4472, 4688)]