161016980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1\times {\mathrm{317}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 343783440

約数和(自身を除く): 182766460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 233, 317, 436, 466, 545, 634, 932, 1090, 1165, 1268, 1585, 2180, 2330, 3170, 4660, 6340, 25397, 34553, 50794, 69106, 73861, 101588, 126985, 138212, 147722, 172765, 253970, 295444, 345530, 369305, 507940, 691060, 738610, 1477220, 8050849, 16101698, 32203396, 40254245, 80508490, 161016980]

約数ペア:

[(1, 161016980), (2, 80508490), (4, 40254245), (5, 32203396), (10, 16101698), (20, 8050849), (109, 1477220), (218, 738610), (233, 691060), (317, 507940), (436, 369305), (466, 345530), (545, 295444), (634, 253970), (932, 172765), (1090, 147722), (1165, 138212), (1268, 126985), (1585, 101588), (2180, 73861), (2330, 69106), (3170, 50794), (4660, 34553), (6340, 25397)]