21397026

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 51436800

約数和(自身を除く): 30039774

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 49, 74, 98, 111, 147, 222, 259, 281, 294, 343, 518, 562, 686, 777, 843, 1029, 1554, 1686, 1813, 1967, 2058, 3626, 3934, 5439, 5901, 10397, 10878, 11802, 12691, 13769, 20794, 25382, 27538, 31191, 38073, 41307, 62382, 72779, 76146, 82614, 96383, 145558, 192766, 218337, 289149, 436674, 509453, 578298, 1018906, 1528359, 3056718, 3566171, 7132342, 10698513, 21397026]

約数ペア:

[(1, 21397026), (2, 10698513), (3, 7132342), (6, 3566171), (7, 3056718), (14, 1528359), (21, 1018906), (37, 578298), (42, 509453), (49, 436674), (74, 289149), (98, 218337), (111, 192766), (147, 145558), (222, 96383), (259, 82614), (281, 76146), (294, 72779), (343, 62382), (518, 41307), (562, 38073), (686, 31191), (777, 27538), (843, 25382), (1029, 20794), (1554, 13769), (1686, 12691), (1813, 11802), (1967, 10878), (2058, 10397), (3626, 5901), (3934, 5439)]