18919376

素因数分解:

$2^4\times 7^1\times {\mathrm{251}}^1\times {\mathrm{673}}^1$

素因数の和:939

約数の個数: 40

約数和(自身を含む): 42122304

約数和(自身を除く): 23202928

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 251, 502, 673, 1004, 1346, 1757, 2008, 2692, 3514, 4016, 4711, 5384, 7028, 9422, 10768, 14056, 18844, 28112, 37688, 75376, 168923, 337846, 675692, 1182461, 1351384, 2364922, 2702768, 4729844, 9459688, 18919376]

約数ペア:

[(1, 18919376), (2, 9459688), (4, 4729844), (7, 2702768), (8, 2364922), (14, 1351384), (16, 1182461), (28, 675692), (56, 337846), (112, 168923), (251, 75376), (502, 37688), (673, 28112), (1004, 18844), (1346, 14056), (1757, 10768), (2008, 9422), (2692, 7028), (3514, 5384), (4016, 4711)]