21163520

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{1181}}^1$

素因数の和:1211

約数の個数: 80

約数和(自身を含む): 58040928

約数和(自身を除く): 36877408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1120, 1181, 1280, 1792, 2240, 2362, 2560, 3584, 4480, 4724, 5905, 8267, 8960, 9448, 11810, 16534, 17920, 18896, 23620, 33068, 37792, 41335, 47240, 66136, 75584, 82670, 94480, 132272, 151168, 165340, 188960, 264544, 302336, 330680, 377920, 529088, 604672, 661360, 755840, 1058176, 1322720, 1511680, 2116352, 2645440, 3023360, 4232704, 5290880, 10581760, 21163520]

約数ペア:

[(1, 21163520), (2, 10581760), (4, 5290880), (5, 4232704), (7, 3023360), (8, 2645440), (10, 2116352), (14, 1511680), (16, 1322720), (20, 1058176), (28, 755840), (32, 661360), (35, 604672), (40, 529088), (56, 377920), (64, 330680), (70, 302336), (80, 264544), (112, 188960), (128, 165340), (140, 151168), (160, 132272), (224, 94480), (256, 82670), (280, 75584), (320, 66136), (448, 47240), (512, 41335), (560, 37792), (640, 33068), (896, 23620), (1120, 18896), (1181, 17920), (1280, 16534), (1792, 11810), (2240, 9448), (2362, 8960), (2560, 8267), (3584, 5905), (4480, 4724)]