21000104

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1871}}^1$

素因数の和:1961

約数の個数: 32

約数和(自身を含む): 41783040

約数和(自身を除く): 20782936

約数列:

[1, 2, 4, 8, 23, 46, 61, 92, 122, 184, 244, 488, 1403, 1871, 2806, 3742, 5612, 7484, 11224, 14968, 43033, 86066, 114131, 172132, 228262, 344264, 456524, 913048, 2625013, 5250026, 10500052, 21000104]

約数ペア:

[(1, 21000104), (2, 10500052), (4, 5250026), (8, 2625013), (23, 913048), (46, 456524), (61, 344264), (92, 228262), (122, 172132), (184, 114131), (244, 86066), (488, 43033), (1403, 14968), (1871, 11224), (2806, 7484), (3742, 5612)]