21000377072

素因数分解:

$2^4\times {\mathrm{149}}^1\times {\mathrm{8808883}}^1$

素因数の和:8809040

約数の個数: 20

約数和(自身を含む): 40961310600

約数和(自身を除く): 19960933528

約数列:

[1, 2, 4, 8, 16, 149, 298, 596, 1192, 2384, 8808883, 17617766, 35235532, 70471064, 140942128, 1312523567, 2625047134, 5250094268, 10500188536, 21000377072]

約数ペア:

[(1, 21000377072), (2, 10500188536), (4, 5250094268), (8, 2625047134), (16, 1312523567), (149, 140942128), (298, 70471064), (596, 35235532), (1192, 17617766), (2384, 8808883)]