21507208

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{653}}^1$

素因数の和:861

約数の個数: 32

約数和(自身を含む): 42379200

約数和(自身を除く): 20871992

約数列:

[1, 2, 4, 8, 23, 46, 92, 179, 184, 358, 653, 716, 1306, 1432, 2612, 4117, 5224, 8234, 15019, 16468, 30038, 32936, 60076, 116887, 120152, 233774, 467548, 935096, 2688401, 5376802, 10753604, 21507208]

約数ペア:

[(1, 21507208), (2, 10753604), (4, 5376802), (8, 2688401), (23, 935096), (46, 467548), (92, 233774), (179, 120152), (184, 116887), (358, 60076), (653, 32936), (716, 30038), (1306, 16468), (1432, 15019), (2612, 8234), (4117, 5224)]