138754820

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{63649}}^1$

素因数の和:63767

約数の個数: 24

約数和(自身を含む): 294063000

約数和(自身を除く): 155308180

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 63649, 127298, 254596, 318245, 636490, 1272980, 6937741, 13875482, 27750964, 34688705, 69377410, 138754820]

約数ペア:

[(1, 138754820), (2, 69377410), (4, 34688705), (5, 27750964), (10, 13875482), (20, 6937741), (109, 1272980), (218, 636490), (436, 318245), (545, 254596), (1090, 127298), (2180, 63649)]