21782185

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{4201}}^1$

素因数の和:4284

約数の個数: 16

約数和(自身を含む): 28136592

約数和(自身を除く): 6354407

約数列:

[1, 5, 17, 61, 85, 305, 1037, 4201, 5185, 21005, 71417, 256261, 357085, 1281305, 4356437, 21782185]

約数ペア:

[(1, 21782185), (5, 4356437), (17, 1281305), (61, 357085), (85, 256261), (305, 71417), (1037, 21005), (4201, 5185)]