21049120

素因数分解:

$2^5\times 5^1\times {\mathrm{293}}^1\times {\mathrm{449}}^1$

素因数の和:757

約数の個数: 48

約数和(自身を含む): 50009400

約数和(自身を除く): 28960280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 293, 449, 586, 898, 1172, 1465, 1796, 2245, 2344, 2930, 3592, 4490, 4688, 5860, 7184, 8980, 9376, 11720, 14368, 17960, 23440, 35920, 46880, 71840, 131557, 263114, 526228, 657785, 1052456, 1315570, 2104912, 2631140, 4209824, 5262280, 10524560, 21049120]

約数ペア:

[(1, 21049120), (2, 10524560), (4, 5262280), (5, 4209824), (8, 2631140), (10, 2104912), (16, 1315570), (20, 1052456), (32, 657785), (40, 526228), (80, 263114), (160, 131557), (293, 71840), (449, 46880), (586, 35920), (898, 23440), (1172, 17960), (1465, 14368), (1796, 11720), (2245, 9376), (2344, 8980), (2930, 7184), (3592, 5860), (4490, 4688)]