21866128

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:371

約数の個数: 40

約数和(自身を含む): 43613528

約数和(自身を除く): 21747400

約数列:

[1, 2, 4, 8, 16, 73, 97, 146, 193, 194, 292, 386, 388, 584, 772, 776, 1168, 1544, 1552, 3088, 7081, 14089, 14162, 18721, 28178, 28324, 37442, 56356, 56648, 74884, 112712, 113296, 149768, 225424, 299536, 1366633, 2733266, 5466532, 10933064, 21866128]

約数ペア:

[(1, 21866128), (2, 10933064), (4, 5466532), (8, 2733266), (16, 1366633), (73, 299536), (97, 225424), (146, 149768), (193, 113296), (194, 112712), (292, 74884), (386, 56648), (388, 56356), (584, 37442), (772, 28324), (776, 28178), (1168, 18721), (1544, 14162), (1552, 14089), (3088, 7081)]