661015520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:265

約数の個数: 192

約数和(自身を含む): 1781885952

約数和(自身を除く): 1120870432

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 47, 55, 61, 80, 88, 94, 110, 122, 131, 160, 176, 188, 220, 235, 244, 262, 305, 352, 376, 440, 470, 488, 517, 524, 610, 655, 671, 752, 880, 940, 976, 1034, 1048, 1220, 1310, 1342, 1441, 1504, 1760, 1880, 1952, 2068, 2096, 2440, 2585, 2620, 2684, 2867, 2882, 3355, 3760, 4136, 4192, 4880, 5170, 5240, 5368, 5734, 5764, 6157, 6710, 7205, 7520, 7991, 8272, 9760, 10340, 10480, 10736, 11468, 11528, 12314, 13420, 14335, 14410, 15982, 16544, 20680, 20960, 21472, 22936, 23056, 24628, 26840, 28670, 28820, 30785, 31537, 31964, 39955, 41360, 45872, 46112, 49256, 53680, 57340, 57640, 61570, 63074, 63928, 67727, 79910, 82720, 87901, 91744, 98512, 107360, 114680, 115280, 123140, 126148, 127856, 135454, 157685, 159820, 175802, 197024, 229360, 230560, 246280, 252296, 255712, 270908, 315370, 319640, 338635, 351604, 375577, 439505, 458720, 492560, 504592, 541816, 630740, 639280, 677270, 703208, 751154, 879010, 985120, 1009184, 1083632, 1261480, 1278560, 1354540, 1406416, 1502308, 1758020, 1877885, 2167264, 2522960, 2709080, 2812832, 3004616, 3516040, 3755770, 4131347, 5045920, 5418160, 6009232, 7032080, 7511540, 8262694, 10836320, 12018464, 14064160, 15023080, 16525388, 20656735, 30046160, 33050776, 41313470, 60092320, 66101552, 82626940, 132203104, 165253880, 330507760, 661015520]

約数ペア:

[(1, 661015520), (2, 330507760), (4, 165253880), (5, 132203104), (8, 82626940), (10, 66101552), (11, 60092320), (16, 41313470), (20, 33050776), (22, 30046160), (32, 20656735), (40, 16525388), (44, 15023080), (47, 14064160), (55, 12018464), (61, 10836320), (80, 8262694), (88, 7511540), (94, 7032080), (110, 6009232), (122, 5418160), (131, 5045920), (160, 4131347), (176, 3755770), (188, 3516040), (220, 3004616), (235, 2812832), (244, 2709080), (262, 2522960), (305, 2167264), (352, 1877885), (376, 1758020), (440, 1502308), (470, 1406416), (488, 1354540), (517, 1278560), (524, 1261480), (610, 1083632), (655, 1009184), (671, 985120), (752, 879010), (880, 751154), (940, 703208), (976, 677270), (1034, 639280), (1048, 630740), (1220, 541816), (1310, 504592), (1342, 492560), (1441, 458720), (1504, 439505), (1760, 375577), (1880, 351604), (1952, 338635), (2068, 319640), (2096, 315370), (2440, 270908), (2585, 255712), (2620, 252296), (2684, 246280), (2867, 230560), (2882, 229360), (3355, 197024), (3760, 175802), (4136, 159820), (4192, 157685), (4880, 135454), (5170, 127856), (5240, 126148), (5368, 123140), (5734, 115280), (5764, 114680), (6157, 107360), (6710, 98512), (7205, 91744), (7520, 87901), (7991, 82720), (8272, 79910), (9760, 67727), (10340, 63928), (10480, 63074), (10736, 61570), (11468, 57640), (11528, 57340), (12314, 53680), (13420, 49256), (14335, 46112), (14410, 45872), (15982, 41360), (16544, 39955), (20680, 31964), (20960, 31537), (21472, 30785), (22936, 28820), (23056, 28670), (24628, 26840)]