21083216

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:292

約数の個数: 80

約数和(自身を含む): 51722880

約数和(自身を除く): 30639664

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 109, 112, 154, 157, 176, 218, 308, 314, 436, 616, 628, 763, 872, 1099, 1199, 1232, 1256, 1526, 1727, 1744, 2198, 2398, 2512, 3052, 3454, 4396, 4796, 6104, 6908, 8393, 8792, 9592, 12089, 12208, 13816, 16786, 17113, 17584, 19184, 24178, 27632, 33572, 34226, 48356, 67144, 68452, 96712, 119791, 134288, 136904, 188243, 193424, 239582, 273808, 376486, 479164, 752972, 958328, 1317701, 1505944, 1916656, 2635402, 3011888, 5270804, 10541608, 21083216]

約数ペア:

[(1, 21083216), (2, 10541608), (4, 5270804), (7, 3011888), (8, 2635402), (11, 1916656), (14, 1505944), (16, 1317701), (22, 958328), (28, 752972), (44, 479164), (56, 376486), (77, 273808), (88, 239582), (109, 193424), (112, 188243), (154, 136904), (157, 134288), (176, 119791), (218, 96712), (308, 68452), (314, 67144), (436, 48356), (616, 34226), (628, 33572), (763, 27632), (872, 24178), (1099, 19184), (1199, 17584), (1232, 17113), (1256, 16786), (1526, 13816), (1727, 12208), (1744, 12089), (2198, 9592), (2398, 8792), (2512, 8393), (3052, 6908), (3454, 6104), (4396, 4796)]