21285874165

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{307}}^1\times {\mathrm{3413}}^1$

素因数の和:3981

約数の個数: 32

約数和(自身を含む): 27255191040

約数和(自身を除く): 5969316875

約数列:

[1, 5, 17, 85, 239, 307, 1195, 1535, 3413, 4063, 5219, 17065, 20315, 26095, 58021, 73373, 290105, 366865, 815707, 1047791, 1247341, 4078535, 5238955, 6236705, 13867019, 17812447, 69335095, 89062235, 250422049, 1252110245, 4257174833, 21285874165]

約数ペア:

[(1, 21285874165), (5, 4257174833), (17, 1252110245), (85, 250422049), (239, 89062235), (307, 69335095), (1195, 17812447), (1535, 13867019), (3413, 6236705), (4063, 5238955), (5219, 4078535), (17065, 1247341), (20315, 1047791), (26095, 815707), (58021, 366865), (73373, 290105)]