20216457105

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{258539}}^1$

素因数の和:258961

約数の個数: 32

約数和(自身を含む): 34921514880

約数和(自身を除く): 14705057775

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 401, 1203, 2005, 5213, 6015, 15639, 26065, 78195, 258539, 775617, 1292695, 3361007, 3878085, 10083021, 16805035, 50415105, 103674139, 311022417, 518370695, 1347763807, 1555112085, 4043291421, 6738819035, 20216457105]

約数ペア:

[(1, 20216457105), (3, 6738819035), (5, 4043291421), (13, 1555112085), (15, 1347763807), (39, 518370695), (65, 311022417), (195, 103674139), (401, 50415105), (1203, 16805035), (2005, 10083021), (5213, 3878085), (6015, 3361007), (15639, 1292695), (26065, 775617), (78195, 258539)]