21032848

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1609}}^1$

素因数の和:1679

約数の個数: 40

約数和(自身を含む): 43920800

約数和(自身を除く): 22887952

約数列:

[1, 2, 4, 8, 16, 19, 38, 43, 76, 86, 152, 172, 304, 344, 688, 817, 1609, 1634, 3218, 3268, 6436, 6536, 12872, 13072, 25744, 30571, 61142, 69187, 122284, 138374, 244568, 276748, 489136, 553496, 1106992, 1314553, 2629106, 5258212, 10516424, 21032848]

約数ペア:

[(1, 21032848), (2, 10516424), (4, 5258212), (8, 2629106), (16, 1314553), (19, 1106992), (38, 553496), (43, 489136), (76, 276748), (86, 244568), (152, 138374), (172, 122284), (304, 69187), (344, 61142), (688, 30571), (817, 25744), (1609, 13072), (1634, 12872), (3218, 6536), (3268, 6436)]