20569983

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{367}}^1$

素因数の和:551

約数の個数: 32

約数和(自身を含む): 33490944

約数和(自身を除く): 12920961

約数列:

[1, 3, 7, 17, 21, 51, 119, 157, 357, 367, 471, 1099, 1101, 2569, 2669, 3297, 6239, 7707, 8007, 18683, 18717, 43673, 56049, 57619, 131019, 172857, 403333, 979523, 1209999, 2938569, 6856661, 20569983]

約数ペア:

[(1, 20569983), (3, 6856661), (7, 2938569), (17, 1209999), (21, 979523), (51, 403333), (119, 172857), (157, 131019), (357, 57619), (367, 56049), (471, 43673), (1099, 18717), (1101, 18683), (2569, 8007), (2669, 7707), (3297, 6239)]