890221580

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{67339}}^1$

素因数の和:68009

約数の個数: 24

約数和(自身を含む): 1872321360

約数和(自身を除く): 982099780

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305, 6610, 13220, 67339, 134678, 269356, 336695, 673390, 1346780, 44511079, 89022158, 178044316, 222555395, 445110790, 890221580]

約数ペア:

[(1, 890221580), (2, 445110790), (4, 222555395), (5, 178044316), (10, 89022158), (20, 44511079), (661, 1346780), (1322, 673390), (2644, 336695), (3305, 269356), (6610, 134678), (13220, 67339)]