20912018

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{3331}}^1$

素因数の和:3449

約数の個数: 16

約数和(自身を含む): 32546976

約数和(自身を除く): 11634958

約数列:

[1, 2, 43, 73, 86, 146, 3139, 3331, 6278, 6662, 143233, 243163, 286466, 486326, 10456009, 20912018]

約数ペア:

[(1, 20912018), (2, 10456009), (43, 486326), (73, 286466), (86, 243163), (146, 143233), (3139, 6662), (3331, 6278)]