20163797260

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^2\times {\mathrm{161543}}^1$

素因数の和:161710

約数の個数: 36

約数和(自身を含む): 42887024208

約数和(自身を除く): 22723226948

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 6241, 12482, 24964, 31205, 62410, 124820, 161543, 323086, 646172, 807715, 1615430, 3230860, 12761897, 25523794, 51047588, 63809485, 127618970, 255237940, 1008189863, 2016379726, 4032759452, 5040949315, 10081898630, 20163797260]

約数ペア:

[(1, 20163797260), (2, 10081898630), (4, 5040949315), (5, 4032759452), (10, 2016379726), (20, 1008189863), (79, 255237940), (158, 127618970), (316, 63809485), (395, 51047588), (790, 25523794), (1580, 12761897), (6241, 3230860), (12482, 1615430), (24964, 807715), (31205, 646172), (62410, 323086), (124820, 161543)]