81339520

素因数分解:

$2^7\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1741}}^1$

素因数の和:1833

約数の個数: 64

約数和(自身を含む): 197229240

約数和(自身を除く): 115889720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 128, 146, 160, 292, 320, 365, 584, 640, 730, 1168, 1460, 1741, 2336, 2920, 3482, 4672, 5840, 6964, 8705, 9344, 11680, 13928, 17410, 23360, 27856, 34820, 46720, 55712, 69640, 111424, 127093, 139280, 222848, 254186, 278560, 508372, 557120, 635465, 1016744, 1114240, 1270930, 2033488, 2541860, 4066976, 5083720, 8133952, 10167440, 16267904, 20334880, 40669760, 81339520]

約数ペア:

[(1, 81339520), (2, 40669760), (4, 20334880), (5, 16267904), (8, 10167440), (10, 8133952), (16, 5083720), (20, 4066976), (32, 2541860), (40, 2033488), (64, 1270930), (73, 1114240), (80, 1016744), (128, 635465), (146, 557120), (160, 508372), (292, 278560), (320, 254186), (365, 222848), (584, 139280), (640, 127093), (730, 111424), (1168, 69640), (1460, 55712), (1741, 46720), (2336, 34820), (2920, 27856), (3482, 23360), (4672, 17410), (5840, 13928), (6964, 11680), (8705, 9344)]