21681072

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:315

約数の個数: 120

約数和(自身を含む): 70296096

約数和(自身を除く): 48615024

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 112, 126, 137, 144, 157, 168, 252, 274, 314, 336, 411, 471, 504, 548, 628, 822, 942, 959, 1008, 1096, 1099, 1233, 1256, 1413, 1644, 1884, 1918, 2192, 2198, 2466, 2512, 2826, 2877, 3288, 3297, 3768, 3836, 4396, 4932, 5652, 5754, 6576, 6594, 7536, 7672, 8631, 8792, 9864, 9891, 11304, 11508, 13188, 15344, 17262, 17584, 19728, 19782, 21509, 22608, 23016, 26376, 34524, 39564, 43018, 46032, 52752, 64527, 69048, 79128, 86036, 129054, 138096, 150563, 158256, 172072, 193581, 258108, 301126, 344144, 387162, 451689, 516216, 602252, 774324, 903378, 1032432, 1204504, 1355067, 1548648, 1806756, 2409008, 2710134, 3097296, 3613512, 5420268, 7227024, 10840536, 21681072]

約数ペア:

[(1, 21681072), (2, 10840536), (3, 7227024), (4, 5420268), (6, 3613512), (7, 3097296), (8, 2710134), (9, 2409008), (12, 1806756), (14, 1548648), (16, 1355067), (18, 1204504), (21, 1032432), (24, 903378), (28, 774324), (36, 602252), (42, 516216), (48, 451689), (56, 387162), (63, 344144), (72, 301126), (84, 258108), (112, 193581), (126, 172072), (137, 158256), (144, 150563), (157, 138096), (168, 129054), (252, 86036), (274, 79128), (314, 69048), (336, 64527), (411, 52752), (471, 46032), (504, 43018), (548, 39564), (628, 34524), (822, 26376), (942, 23016), (959, 22608), (1008, 21509), (1096, 19782), (1099, 19728), (1233, 17584), (1256, 17262), (1413, 15344), (1644, 13188), (1884, 11508), (1918, 11304), (2192, 9891), (2198, 9864), (2466, 8792), (2512, 8631), (2826, 7672), (2877, 7536), (3288, 6594), (3297, 6576), (3768, 5754), (3836, 5652), (4396, 4932)]