81647720

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{541}}^1$

素因数の和:584

約数の個数: 128

約数和(自身を含む): 234144000

約数和(自身を除く): 152496280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 140, 154, 196, 220, 245, 280, 308, 343, 385, 392, 440, 490, 539, 541, 616, 686, 770, 980, 1078, 1082, 1372, 1540, 1715, 1960, 2156, 2164, 2695, 2705, 2744, 3080, 3430, 3773, 3787, 4312, 4328, 5390, 5410, 5951, 6860, 7546, 7574, 10780, 10820, 11902, 13720, 15092, 15148, 18865, 18935, 21560, 21640, 23804, 26509, 29755, 30184, 30296, 37730, 37870, 41657, 47608, 53018, 59510, 75460, 75740, 83314, 106036, 119020, 132545, 150920, 151480, 166628, 185563, 208285, 212072, 238040, 265090, 291599, 333256, 371126, 416570, 530180, 583198, 742252, 833140, 927815, 1060360, 1166396, 1457995, 1484504, 1666280, 1855630, 2041193, 2332792, 2915990, 3711260, 4082386, 5831980, 7422520, 8164772, 10205965, 11663960, 16329544, 20411930, 40823860, 81647720]

約数ペア:

[(1, 81647720), (2, 40823860), (4, 20411930), (5, 16329544), (7, 11663960), (8, 10205965), (10, 8164772), (11, 7422520), (14, 5831980), (20, 4082386), (22, 3711260), (28, 2915990), (35, 2332792), (40, 2041193), (44, 1855630), (49, 1666280), (55, 1484504), (56, 1457995), (70, 1166396), (77, 1060360), (88, 927815), (98, 833140), (110, 742252), (140, 583198), (154, 530180), (196, 416570), (220, 371126), (245, 333256), (280, 291599), (308, 265090), (343, 238040), (385, 212072), (392, 208285), (440, 185563), (490, 166628), (539, 151480), (541, 150920), (616, 132545), (686, 119020), (770, 106036), (980, 83314), (1078, 75740), (1082, 75460), (1372, 59510), (1540, 53018), (1715, 47608), (1960, 41657), (2156, 37870), (2164, 37730), (2695, 30296), (2705, 30184), (2744, 29755), (3080, 26509), (3430, 23804), (3773, 21640), (3787, 21560), (4312, 18935), (4328, 18865), (5390, 15148), (5410, 15092), (5951, 13720), (6860, 11902), (7546, 10820), (7574, 10780)]