19981426

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{30931}}^1$

素因数の和:30969

約数の個数: 16

約数和(自身を含む): 33406560

約数和(自身を除く): 13425134

約数列:

[1, 2, 17, 19, 34, 38, 323, 646, 30931, 61862, 525827, 587689, 1051654, 1175378, 9990713, 19981426]

約数ペア:

[(1, 19981426), (2, 9990713), (17, 1175378), (19, 1051654), (34, 587689), (38, 525827), (323, 61862), (646, 30931)]