18767560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{691}}^1$

素因数の和:806

約数の個数: 64

約数和(自身を含む): 48827520

約数和(自身を除く): 30059960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 97, 140, 194, 280, 388, 485, 679, 691, 776, 970, 1358, 1382, 1940, 2716, 2764, 3395, 3455, 3880, 4837, 5432, 5528, 6790, 6910, 9674, 13580, 13820, 19348, 24185, 27160, 27640, 38696, 48370, 67027, 96740, 134054, 193480, 268108, 335135, 469189, 536216, 670270, 938378, 1340540, 1876756, 2345945, 2681080, 3753512, 4691890, 9383780, 18767560]

約数ペア:

[(1, 18767560), (2, 9383780), (4, 4691890), (5, 3753512), (7, 2681080), (8, 2345945), (10, 1876756), (14, 1340540), (20, 938378), (28, 670270), (35, 536216), (40, 469189), (56, 335135), (70, 268108), (97, 193480), (140, 134054), (194, 96740), (280, 67027), (388, 48370), (485, 38696), (679, 27640), (691, 27160), (776, 24185), (970, 19348), (1358, 13820), (1382, 13580), (1940, 9674), (2716, 6910), (2764, 6790), (3395, 5528), (3455, 5432), (3880, 4837)]