21000481216

素因数分解:

$2^6\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{619}}^1$

素因数の和:1003

約数の個数: 168

約数和(自身を含む): 49555491440

約数和(自身を除く): 28555010224

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 121, 143, 176, 208, 242, 286, 337, 352, 416, 484, 572, 619, 674, 704, 832, 968, 1144, 1238, 1348, 1573, 1936, 2288, 2476, 2696, 3146, 3707, 3872, 4381, 4576, 4952, 5392, 6292, 6809, 7414, 7744, 8047, 8762, 9152, 9904, 10784, 12584, 13618, 14828, 16094, 17524, 19808, 21568, 25168, 27236, 29656, 32188, 35048, 39616, 40777, 48191, 50336, 54472, 59312, 64376, 70096, 74899, 81554, 88517, 96382, 100672, 108944, 118624, 128752, 140192, 149798, 163108, 177034, 192764, 208603, 217888, 237248, 257504, 280384, 299596, 326216, 354068, 385528, 417206, 435776, 515008, 530101, 599192, 652432, 708136, 771056, 834412, 973687, 1060202, 1198384, 1304864, 1416272, 1542112, 1668824, 1947374, 2120404, 2294633, 2396768, 2609728, 2711839, 2832544, 3084224, 3337648, 3894748, 4240808, 4589266, 4793536, 5423678, 5665088, 6675296, 7789496, 8481616, 9178532, 10847356, 13350592, 15578992, 16963232, 18357064, 21694712, 25240963, 29830229, 31157984, 33926464, 36714128, 43389424, 50481926, 59660458, 62315968, 73428256, 86778848, 100963852, 119320916, 146856512, 173557696, 201927704, 238641832, 328132519, 403855408, 477283664, 656265038, 807710816, 954567328, 1312530076, 1615421632, 1909134656, 2625060152, 5250120304, 10500240608, 21000481216]

約数ペア:

[(1, 21000481216), (2, 10500240608), (4, 5250120304), (8, 2625060152), (11, 1909134656), (13, 1615421632), (16, 1312530076), (22, 954567328), (26, 807710816), (32, 656265038), (44, 477283664), (52, 403855408), (64, 328132519), (88, 238641832), (104, 201927704), (121, 173557696), (143, 146856512), (176, 119320916), (208, 100963852), (242, 86778848), (286, 73428256), (337, 62315968), (352, 59660458), (416, 50481926), (484, 43389424), (572, 36714128), (619, 33926464), (674, 31157984), (704, 29830229), (832, 25240963), (968, 21694712), (1144, 18357064), (1238, 16963232), (1348, 15578992), (1573, 13350592), (1936, 10847356), (2288, 9178532), (2476, 8481616), (2696, 7789496), (3146, 6675296), (3707, 5665088), (3872, 5423678), (4381, 4793536), (4576, 4589266), (4952, 4240808), (5392, 3894748), (6292, 3337648), (6809, 3084224), (7414, 2832544), (7744, 2711839), (8047, 2609728), (8762, 2396768), (9152, 2294633), (9904, 2120404), (10784, 1947374), (12584, 1668824), (13618, 1542112), (14828, 1416272), (16094, 1304864), (17524, 1198384), (19808, 1060202), (21568, 973687), (25168, 834412), (27236, 771056), (29656, 708136), (32188, 652432), (35048, 599192), (39616, 530101), (40777, 515008), (48191, 435776), (50336, 417206), (54472, 385528), (59312, 354068), (64376, 326216), (70096, 299596), (74899, 280384), (81554, 257504), (88517, 237248), (96382, 217888), (100672, 208603), (108944, 192764), (118624, 177034), (128752, 163108), (140192, 149798)]