21415828

素因数分解:

$2^2\times 7^1\times {\mathrm{383}}^1\times {\mathrm{1997}}^1$

素因数の和:2391

約数の個数: 24

約数和(自身を含む): 42964992

約数和(自身を除く): 21549164

約数列:

[1, 2, 4, 7, 14, 28, 383, 766, 1532, 1997, 2681, 3994, 5362, 7988, 10724, 13979, 27958, 55916, 764851, 1529702, 3059404, 5353957, 10707914, 21415828]

約数ペア:

[(1, 21415828), (2, 10707914), (4, 5353957), (7, 3059404), (14, 1529702), (28, 764851), (383, 55916), (766, 27958), (1532, 13979), (1997, 10724), (2681, 7988), (3994, 5362)]