21685768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1913}}^1$

素因数の和:2041

約数の個数: 32

約数和(自身を含む): 44213400

約数和(自身を除く): 22527632

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 109, 218, 436, 872, 1417, 1913, 2834, 3826, 5668, 7652, 11336, 15304, 24869, 49738, 99476, 198952, 208517, 417034, 834068, 1668136, 2710721, 5421442, 10842884, 21685768]

約数ペア:

[(1, 21685768), (2, 10842884), (4, 5421442), (8, 2710721), (13, 1668136), (26, 834068), (52, 417034), (104, 208517), (109, 198952), (218, 99476), (436, 49738), (872, 24869), (1417, 15304), (1913, 11336), (2834, 7652), (3826, 5668)]