20663799

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{769}}^1$

素因数の和:851

約数の個数: 24

約数和(自身を含む): 30436560

約数和(自身を除く): 9772761

約数列:

[1, 3, 13, 39, 53, 159, 169, 507, 689, 769, 2067, 2307, 8957, 9997, 26871, 29991, 40757, 122271, 129961, 389883, 529841, 1589523, 6887933, 20663799]

約数ペア:

[(1, 20663799), (3, 6887933), (13, 1589523), (39, 529841), (53, 389883), (159, 129961), (169, 122271), (507, 40757), (689, 29991), (769, 26871), (2067, 9997), (2307, 8957)]