21302828

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{1153}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 38774400

約数和(自身を除く): 17471572

約数列:

[1, 2, 4, 31, 62, 124, 149, 298, 596, 1153, 2306, 4612, 4619, 9238, 18476, 35743, 71486, 142972, 171797, 343594, 687188, 5325707, 10651414, 21302828]

約数ペア:

[(1, 21302828), (2, 10651414), (4, 5325707), (31, 687188), (62, 343594), (124, 171797), (149, 142972), (298, 71486), (596, 35743), (1153, 18476), (2306, 9238), (4612, 4619)]