20803988

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{1553}}^1$

素因数の和:1771

約数の個数: 24

約数和(自身を含む): 38769192

約数和(自身を除く): 17965204

約数列:

[1, 2, 4, 17, 34, 68, 197, 394, 788, 1553, 3106, 3349, 6212, 6698, 13396, 26401, 52802, 105604, 305941, 611882, 1223764, 5200997, 10401994, 20803988]

約数ペア:

[(1, 20803988), (2, 10401994), (4, 5200997), (17, 1223764), (34, 611882), (68, 305941), (197, 105604), (394, 52802), (788, 26401), (1553, 13396), (3106, 6698), (3349, 6212)]