20379248

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1559}}^1$

素因数の和:1629

約数の個数: 40

約数和(自身を含む): 42556800

約数和(自身を除く): 22177552

約数列:

[1, 2, 4, 8, 16, 19, 38, 43, 76, 86, 152, 172, 304, 344, 688, 817, 1559, 1634, 3118, 3268, 6236, 6536, 12472, 13072, 24944, 29621, 59242, 67037, 118484, 134074, 236968, 268148, 473936, 536296, 1072592, 1273703, 2547406, 5094812, 10189624, 20379248]

約数ペア:

[(1, 20379248), (2, 10189624), (4, 5094812), (8, 2547406), (16, 1273703), (19, 1072592), (38, 536296), (43, 473936), (76, 268148), (86, 236968), (152, 134074), (172, 118484), (304, 67037), (344, 59242), (688, 29621), (817, 24944), (1559, 13072), (1634, 12472), (3118, 6536), (3268, 6236)]