21289772

素因数分解:

$2^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{5987}}^1$

素因数の和:6125

約数の個数: 24

約数和(自身を含む): 42921984

約数和(自身を除く): 21632212

約数列:

[1, 2, 4, 7, 14, 28, 127, 254, 508, 889, 1778, 3556, 5987, 11974, 23948, 41909, 83818, 167636, 760349, 1520698, 3041396, 5322443, 10644886, 21289772]

約数ペア:

[(1, 21289772), (2, 10644886), (4, 5322443), (7, 3041396), (14, 1520698), (28, 760349), (127, 167636), (254, 83818), (508, 41909), (889, 23948), (1778, 11974), (3556, 5987)]