21983684

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{2081}}^1$

素因数の和:2243

約数の個数: 24

約数和(自身を含む): 40807200

約数和(自身を除く): 18823516

約数列:

[1, 2, 4, 19, 38, 76, 139, 278, 556, 2081, 2641, 4162, 5282, 8324, 10564, 39539, 79078, 158156, 289259, 578518, 1157036, 5495921, 10991842, 21983684]

約数ペア:

[(1, 21983684), (2, 10991842), (4, 5495921), (19, 1157036), (38, 578518), (76, 289259), (139, 158156), (278, 79078), (556, 39539), (2081, 10564), (2641, 8324), (4162, 5282)]