20687138

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{233}}^1\times {\mathrm{431}}^1$

素因数の和:769

約数の個数: 16

約数和(自身を含む): 31539456

約数和(自身を除く): 10852318

約数列:

[1, 2, 103, 206, 233, 431, 466, 862, 23999, 44393, 47998, 88786, 100423, 200846, 10343569, 20687138]

約数ペア:

[(1, 20687138), (2, 10343569), (103, 200846), (206, 100423), (233, 88786), (431, 47998), (466, 44393), (862, 23999)]