21158476

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{1399}}^1$

素因数の和:1621

約数の個数: 24

約数和(自身を含む): 39200000

約数和(自身を除く): 18041524

約数列:

[1, 2, 4, 19, 38, 76, 199, 398, 796, 1399, 2798, 3781, 5596, 7562, 15124, 26581, 53162, 106324, 278401, 556802, 1113604, 5289619, 10579238, 21158476]

約数ペア:

[(1, 21158476), (2, 10579238), (4, 5289619), (19, 1113604), (38, 556802), (76, 278401), (199, 106324), (398, 53162), (796, 26581), (1399, 15124), (2798, 7562), (3781, 5596)]