21262928

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32413}}^1$

素因数の和:32462

約数の個数: 20

約数和(自身を含む): 42203028

約数和(自身を除く): 20940100

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32413, 64826, 129652, 259304, 518608, 1328933, 2657866, 5315732, 10631464, 21262928]

約数ペア:

[(1, 21262928), (2, 10631464), (4, 5315732), (8, 2657866), (16, 1328933), (41, 518608), (82, 259304), (164, 129652), (328, 64826), (656, 32413)]