20426536

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{997}}^1$

素因数の和:1213

約数の個数: 32

約数和(自身を含む): 41496840

約数和(自身を除く): 21070304

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197, 394, 788, 997, 1576, 1994, 2561, 3988, 5122, 7976, 10244, 12961, 20488, 25922, 51844, 103688, 196409, 392818, 785636, 1571272, 2553317, 5106634, 10213268, 20426536]

約数ペア:

[(1, 20426536), (2, 10213268), (4, 5106634), (8, 2553317), (13, 1571272), (26, 785636), (52, 392818), (104, 196409), (197, 103688), (394, 51844), (788, 25922), (997, 20488), (1576, 12961), (1994, 10244), (2561, 7976), (3988, 5122)]