21361456

素因数分解:

$2^4\times {\mathrm{199}}^1\times {\mathrm{6709}}^1$

素因数の和:6916

約数の個数: 20

約数和(自身を含む): 41602000

約数和(自身を除く): 20240544

約数列:

[1, 2, 4, 8, 16, 199, 398, 796, 1592, 3184, 6709, 13418, 26836, 53672, 107344, 1335091, 2670182, 5340364, 10680728, 21361456]

約数ペア:

[(1, 21361456), (2, 10680728), (4, 5340364), (8, 2670182), (16, 1335091), (199, 107344), (398, 53672), (796, 26836), (1592, 13418), (3184, 6709)]