21245914

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{1367}}^1$

素因数の和:1797

約数の個数: 16

約数和(自身を含む): 33652800

約数和(自身を除く): 12406886

約数列:

[1, 2, 19, 38, 409, 818, 1367, 2734, 7771, 15542, 25973, 51946, 559103, 1118206, 10622957, 21245914]

約数ペア:

[(1, 21245914), (2, 10622957), (19, 1118206), (38, 559103), (409, 51946), (818, 25973), (1367, 15542), (2734, 7771)]