21955680

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:293

約数の個数: 144

約数和(自身を含む): 76265280

約数和(自身を除く): 54309600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 79, 80, 90, 96, 120, 144, 158, 160, 180, 193, 237, 240, 288, 316, 360, 386, 395, 474, 480, 579, 632, 711, 720, 772, 790, 948, 965, 1158, 1185, 1264, 1422, 1440, 1544, 1580, 1737, 1896, 1930, 2316, 2370, 2528, 2844, 2895, 3088, 3160, 3474, 3555, 3792, 3860, 4632, 4740, 5688, 5790, 6176, 6320, 6948, 7110, 7584, 7720, 8685, 9264, 9480, 11376, 11580, 12640, 13896, 14220, 15247, 15440, 17370, 18528, 18960, 22752, 23160, 27792, 28440, 30494, 30880, 34740, 37920, 45741, 46320, 55584, 56880, 60988, 69480, 76235, 91482, 92640, 113760, 121976, 137223, 138960, 152470, 182964, 228705, 243952, 274446, 277920, 304940, 365928, 457410, 487904, 548892, 609880, 686115, 731856, 914820, 1097784, 1219760, 1372230, 1463712, 1829640, 2195568, 2439520, 2744460, 3659280, 4391136, 5488920, 7318560, 10977840, 21955680]

約数ペア:

[(1, 21955680), (2, 10977840), (3, 7318560), (4, 5488920), (5, 4391136), (6, 3659280), (8, 2744460), (9, 2439520), (10, 2195568), (12, 1829640), (15, 1463712), (16, 1372230), (18, 1219760), (20, 1097784), (24, 914820), (30, 731856), (32, 686115), (36, 609880), (40, 548892), (45, 487904), (48, 457410), (60, 365928), (72, 304940), (79, 277920), (80, 274446), (90, 243952), (96, 228705), (120, 182964), (144, 152470), (158, 138960), (160, 137223), (180, 121976), (193, 113760), (237, 92640), (240, 91482), (288, 76235), (316, 69480), (360, 60988), (386, 56880), (395, 55584), (474, 46320), (480, 45741), (579, 37920), (632, 34740), (711, 30880), (720, 30494), (772, 28440), (790, 27792), (948, 23160), (965, 22752), (1158, 18960), (1185, 18528), (1264, 17370), (1422, 15440), (1440, 15247), (1544, 14220), (1580, 13896), (1737, 12640), (1896, 11580), (1930, 11376), (2316, 9480), (2370, 9264), (2528, 8685), (2844, 7720), (2895, 7584), (3088, 7110), (3160, 6948), (3474, 6320), (3555, 6176), (3792, 5790), (3860, 5688), (4632, 4740)]