21087918

素因数分解:

$2^1\times 3^3\times {\mathrm{23}}^1\times {\mathrm{16979}}^1$

素因数の和:17013

約数の個数: 32

約数和(自身を含む): 48902400

約数和(自身を除く): 27814482

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 138, 207, 414, 621, 1242, 16979, 33958, 50937, 101874, 152811, 305622, 390517, 458433, 781034, 916866, 1171551, 2343102, 3514653, 7029306, 10543959, 21087918]

約数ペア:

[(1, 21087918), (2, 10543959), (3, 7029306), (6, 3514653), (9, 2343102), (18, 1171551), (23, 916866), (27, 781034), (46, 458433), (54, 390517), (69, 305622), (138, 152811), (207, 101874), (414, 50937), (621, 33958), (1242, 16979)]