21089969116

素因数分解:

$2^2\times {\mathrm{509}}^1\times {\mathrm{661}}^1\times {\mathrm{15671}}^1$

素因数の和:16845

約数の個数: 24

約数和(自身を含む): 37038264480

約数和(自身を除く): 15948295364

約数列:

[1, 2, 4, 509, 661, 1018, 1322, 2036, 2644, 15671, 31342, 62684, 336449, 672898, 1345796, 7976539, 10358531, 15953078, 20717062, 31906156, 41434124, 5272492279, 10544984558, 21089969116]

約数ペア:

[(1, 21089969116), (2, 10544984558), (4, 5272492279), (509, 41434124), (661, 31906156), (1018, 20717062), (1322, 15953078), (2036, 10358531), (2644, 7976539), (15671, 1345796), (31342, 672898), (62684, 336449)]