21903884

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{288209}}^1$

素因数の和:288232

約数の個数: 12

約数和(自身を含む): 40349400

約数和(自身を除く): 18445516

約数列:

[1, 2, 4, 19, 38, 76, 288209, 576418, 1152836, 5475971, 10951942, 21903884]

約数ペア:

[(1, 21903884), (2, 10951942), (4, 5475971), (19, 1152836), (38, 576418), (76, 288209)]