21254933

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2389}}^1$

素因数の和:2468

約数の個数: 16

約数和(自身を含む): 25697280

約数和(自身を除く): 4442347

約数列:

[1, 7, 31, 41, 217, 287, 1271, 2389, 8897, 16723, 74059, 97949, 518413, 685643, 3036419, 21254933]

約数ペア:

[(1, 21254933), (7, 3036419), (31, 685643), (41, 518413), (217, 97949), (287, 74059), (1271, 16723), (2389, 8897)]