20591408

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11807}}^1$

素因数の和:11924

約数の個数: 20

約数和(自身を含む): 40265280

約数和(自身を除く): 19673872

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11807, 23614, 47228, 94456, 188912, 1286963, 2573926, 5147852, 10295704, 20591408]

約数ペア:

[(1, 20591408), (2, 10295704), (4, 5147852), (8, 2573926), (16, 1286963), (109, 188912), (218, 94456), (436, 47228), (872, 23614), (1744, 11807)]