21048352

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2663}}^1$

素因数の和:2705

約数の個数: 48

約数和(自身を含む): 46992960

約数和(自身を除く): 25944608

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2663, 3952, 5326, 7904, 10652, 21304, 34619, 42608, 50597, 69238, 85216, 101194, 138476, 202388, 276952, 404776, 553904, 657761, 809552, 1107808, 1315522, 1619104, 2631044, 5262088, 10524176, 21048352]

約数ペア:

[(1, 21048352), (2, 10524176), (4, 5262088), (8, 2631044), (13, 1619104), (16, 1315522), (19, 1107808), (26, 809552), (32, 657761), (38, 553904), (52, 404776), (76, 276952), (104, 202388), (152, 138476), (208, 101194), (247, 85216), (304, 69238), (416, 50597), (494, 42608), (608, 34619), (988, 21304), (1976, 10652), (2663, 7904), (3952, 5326)]