19871290

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{37493}}^1$

素因数の和:37553

約数の個数: 16

約数和(自身を含む): 36444168

約数和(自身を除く): 16572878

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 37493, 74986, 187465, 374930, 1987129, 3974258, 9935645, 19871290]

約数ペア:

[(1, 19871290), (2, 9935645), (5, 3974258), (10, 1987129), (53, 374930), (106, 187465), (265, 74986), (530, 37493)]