2021979981

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5067619}}^1$

素因数の和:5067648

約数の個数: 16

約数和(自身を含む): 3243276800

約数和(自身を除く): 1221296819

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 5067619, 15202857, 35473333, 96284761, 106419999, 288854283, 673993327, 2021979981]

約数ペア:

[(1, 2021979981), (3, 673993327), (7, 288854283), (19, 106419999), (21, 96284761), (57, 35473333), (133, 15202857), (399, 5067619)]