218755840

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:238

約数の個数: 144

約数和(自身を含む): 559238400

約数和(自身を除く): 340482560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 62, 64, 74, 80, 124, 128, 148, 149, 155, 160, 185, 248, 256, 296, 298, 310, 320, 370, 496, 592, 596, 620, 640, 740, 745, 992, 1147, 1184, 1192, 1240, 1280, 1480, 1490, 1984, 2294, 2368, 2384, 2480, 2960, 2980, 3968, 4588, 4619, 4736, 4768, 4960, 5513, 5735, 5920, 5960, 7936, 9176, 9238, 9472, 9536, 9920, 11026, 11470, 11840, 11920, 18352, 18476, 19072, 19840, 22052, 22940, 23095, 23680, 23840, 27565, 36704, 36952, 38144, 39680, 44104, 45880, 46190, 47360, 47680, 55130, 73408, 73904, 88208, 91760, 92380, 95360, 110260, 146816, 147808, 170903, 176416, 183520, 184760, 190720, 220520, 293632, 295616, 341806, 352832, 367040, 369520, 441040, 591232, 683612, 705664, 734080, 739040, 854515, 882080, 1182464, 1367224, 1411328, 1468160, 1478080, 1709030, 1764160, 2734448, 2956160, 3418060, 3528320, 5468896, 5912320, 6836120, 7056640, 10937792, 13672240, 21875584, 27344480, 43751168, 54688960, 109377920, 218755840]

約数ペア:

[(1, 218755840), (2, 109377920), (4, 54688960), (5, 43751168), (8, 27344480), (10, 21875584), (16, 13672240), (20, 10937792), (31, 7056640), (32, 6836120), (37, 5912320), (40, 5468896), (62, 3528320), (64, 3418060), (74, 2956160), (80, 2734448), (124, 1764160), (128, 1709030), (148, 1478080), (149, 1468160), (155, 1411328), (160, 1367224), (185, 1182464), (248, 882080), (256, 854515), (296, 739040), (298, 734080), (310, 705664), (320, 683612), (370, 591232), (496, 441040), (592, 369520), (596, 367040), (620, 352832), (640, 341806), (740, 295616), (745, 293632), (992, 220520), (1147, 190720), (1184, 184760), (1192, 183520), (1240, 176416), (1280, 170903), (1480, 147808), (1490, 146816), (1984, 110260), (2294, 95360), (2368, 92380), (2384, 91760), (2480, 88208), (2960, 73904), (2980, 73408), (3968, 55130), (4588, 47680), (4619, 47360), (4736, 46190), (4768, 45880), (4960, 44104), (5513, 39680), (5735, 38144), (5920, 36952), (5960, 36704), (7936, 27565), (9176, 23840), (9238, 23680), (9472, 23095), (9536, 22940), (9920, 22052), (11026, 19840), (11470, 19072), (11840, 18476), (11920, 18352)]