19972898

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{491}}^1$

素因数の和:590

約数の個数: 24

約数和(自身を含む): 33528816

約数和(自身を除く): 13555918

約数列:

[1, 2, 11, 22, 43, 86, 473, 491, 946, 982, 1849, 3698, 5401, 10802, 20339, 21113, 40678, 42226, 232243, 464486, 907859, 1815718, 9986449, 19972898]

約数ペア:

[(1, 19972898), (2, 9986449), (11, 1815718), (22, 907859), (43, 464486), (86, 232243), (473, 42226), (491, 40678), (946, 21113), (982, 20339), (1849, 10802), (3698, 5401)]