81204720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:399

約数の個数: 160

約数和(自身を含む): 269125632

約数和(自身を除く): 187920912

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 47, 48, 60, 69, 80, 92, 94, 115, 120, 138, 141, 184, 188, 230, 235, 240, 276, 282, 313, 345, 368, 376, 460, 470, 552, 564, 626, 690, 705, 752, 920, 939, 940, 1081, 1104, 1128, 1252, 1380, 1410, 1565, 1840, 1878, 1880, 2162, 2256, 2504, 2760, 2820, 3130, 3243, 3756, 3760, 4324, 4695, 5008, 5405, 5520, 5640, 6260, 6486, 7199, 7512, 8648, 9390, 10810, 11280, 12520, 12972, 14398, 14711, 15024, 16215, 17296, 18780, 21597, 21620, 25040, 25944, 28796, 29422, 32430, 35995, 37560, 43194, 43240, 44133, 51888, 57592, 58844, 64860, 71990, 73555, 75120, 86388, 86480, 88266, 107985, 115184, 117688, 129720, 143980, 147110, 172776, 176532, 215970, 220665, 235376, 259440, 287960, 294220, 338353, 345552, 353064, 431940, 441330, 575920, 588440, 676706, 706128, 863880, 882660, 1015059, 1176880, 1353412, 1691765, 1727760, 1765320, 2030118, 2706824, 3383530, 3530640, 4060236, 5075295, 5413648, 6767060, 8120472, 10150590, 13534120, 16240944, 20301180, 27068240, 40602360, 81204720]

約数ペア:

[(1, 81204720), (2, 40602360), (3, 27068240), (4, 20301180), (5, 16240944), (6, 13534120), (8, 10150590), (10, 8120472), (12, 6767060), (15, 5413648), (16, 5075295), (20, 4060236), (23, 3530640), (24, 3383530), (30, 2706824), (40, 2030118), (46, 1765320), (47, 1727760), (48, 1691765), (60, 1353412), (69, 1176880), (80, 1015059), (92, 882660), (94, 863880), (115, 706128), (120, 676706), (138, 588440), (141, 575920), (184, 441330), (188, 431940), (230, 353064), (235, 345552), (240, 338353), (276, 294220), (282, 287960), (313, 259440), (345, 235376), (368, 220665), (376, 215970), (460, 176532), (470, 172776), (552, 147110), (564, 143980), (626, 129720), (690, 117688), (705, 115184), (752, 107985), (920, 88266), (939, 86480), (940, 86388), (1081, 75120), (1104, 73555), (1128, 71990), (1252, 64860), (1380, 58844), (1410, 57592), (1565, 51888), (1840, 44133), (1878, 43240), (1880, 43194), (2162, 37560), (2256, 35995), (2504, 32430), (2760, 29422), (2820, 28796), (3130, 25944), (3243, 25040), (3756, 21620), (3760, 21597), (4324, 18780), (4695, 17296), (5008, 16215), (5405, 15024), (5520, 14711), (5640, 14398), (6260, 12972), (6486, 12520), (7199, 11280), (7512, 10810), (8648, 9390)]