20998911

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1\times {\mathrm{353}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 28546560

約数和(自身を除く): 7547649

約数列:

[1, 3, 79, 237, 251, 353, 753, 1059, 19829, 27887, 59487, 83661, 88603, 265809, 6999637, 20998911]

約数ペア:

[(1, 20998911), (3, 6999637), (79, 265809), (237, 88603), (251, 83661), (353, 59487), (753, 27887), (1059, 19829)]