21000209021

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1499}}^1\times {\mathrm{3943}}^1$

素因数の和:5489

約数の個数: 32

約数和(自身を含む): 25557120000

約数和(自身を除く): 4556910979

約数列:

[1, 11, 17, 19, 187, 209, 323, 1499, 3553, 3943, 16489, 25483, 28481, 43373, 67031, 74917, 280313, 313291, 484177, 737341, 824087, 1273589, 5325947, 5910557, 14009479, 65016127, 100479469, 112300583, 1105274159, 1235306413, 1909109911, 21000209021]

約数ペア:

[(1, 21000209021), (11, 1909109911), (17, 1235306413), (19, 1105274159), (187, 112300583), (209, 100479469), (323, 65016127), (1499, 14009479), (3553, 5910557), (3943, 5325947), (16489, 1273589), (25483, 824087), (28481, 737341), (43373, 484177), (67031, 313291), (74917, 280313)]