21260988

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{28123}}^1$

素因数の和:28143

約数の個数: 48

約数和(自身を含む): 62997760

約数和(自身を除く): 41736772

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 28123, 56246, 84369, 112492, 168738, 196861, 253107, 337476, 393722, 506214, 590583, 759321, 787444, 1012428, 1181166, 1518642, 1771749, 2362332, 3037284, 3543498, 5315247, 7086996, 10630494, 21260988]

約数ペア:

[(1, 21260988), (2, 10630494), (3, 7086996), (4, 5315247), (6, 3543498), (7, 3037284), (9, 2362332), (12, 1771749), (14, 1518642), (18, 1181166), (21, 1012428), (27, 787444), (28, 759321), (36, 590583), (42, 506214), (54, 393722), (63, 337476), (84, 253107), (108, 196861), (126, 168738), (189, 112492), (252, 84369), (378, 56246), (756, 28123)]