20992112

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{347}}^1$

素因数の和:573

約数の個数: 40

約数和(自身を含む): 43152000

約数和(自身を除く): 22159888

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 199, 304, 347, 398, 694, 796, 1388, 1592, 2776, 3184, 3781, 5552, 6593, 7562, 13186, 15124, 26372, 30248, 52744, 60496, 69053, 105488, 138106, 276212, 552424, 1104848, 1312007, 2624014, 5248028, 10496056, 20992112]

約数ペア:

[(1, 20992112), (2, 10496056), (4, 5248028), (8, 2624014), (16, 1312007), (19, 1104848), (38, 552424), (76, 276212), (152, 138106), (199, 105488), (304, 69053), (347, 60496), (398, 52744), (694, 30248), (796, 26372), (1388, 15124), (1592, 13186), (2776, 7562), (3184, 6593), (3781, 5552)]