19980858

素因数分解:

$2^1\times 3^1\times {\mathrm{41}}^1\times {\mathrm{81223}}^1$

素因数の和:81269

約数の個数: 16

約数和(自身を含む): 40936896

約数和(自身を除く): 20956038

約数列:

[1, 2, 3, 6, 41, 82, 123, 246, 81223, 162446, 243669, 487338, 3330143, 6660286, 9990429, 19980858]

約数ペア:

[(1, 19980858), (2, 9990429), (3, 6660286), (6, 3330143), (41, 487338), (82, 243669), (123, 162446), (246, 81223)]