21980456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7027}}^1$

素因数の和:7073

約数の個数: 32

約数和(自身を含む): 45541440

約数和(自身を除く): 23560984

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 68, 92, 136, 184, 391, 782, 1564, 3128, 7027, 14054, 28108, 56216, 119459, 161621, 238918, 323242, 477836, 646484, 955672, 1292968, 2747557, 5495114, 10990228, 21980456]

約数ペア:

[(1, 21980456), (2, 10990228), (4, 5495114), (8, 2747557), (17, 1292968), (23, 955672), (34, 646484), (46, 477836), (68, 323242), (92, 238918), (136, 161621), (184, 119459), (391, 56216), (782, 28108), (1564, 14054), (3128, 7027)]