20012979

素因数分解:

$3^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{1669}}^1$

素因数の和:2250

約数の個数: 16

約数和(自身を含む): 30567680

約数和(自身を除く): 10554701

約数列:

[1, 3, 7, 21, 571, 1669, 1713, 3997, 5007, 11683, 11991, 35049, 952999, 2858997, 6670993, 20012979]

約数ペア:

[(1, 20012979), (3, 6670993), (7, 2858997), (21, 952999), (571, 35049), (1669, 11991), (1713, 11683), (3997, 5007)]