21753088

素因数分解:

$2^8\times 7^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:283

約数の個数: 72

約数和(自身を含む): 50691200

約数和(自身を除く): 28938112

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 61, 64, 112, 122, 128, 199, 224, 244, 256, 398, 427, 448, 488, 796, 854, 896, 976, 1393, 1592, 1708, 1792, 1952, 2786, 3184, 3416, 3904, 5572, 6368, 6832, 7808, 11144, 12139, 12736, 13664, 15616, 22288, 24278, 25472, 27328, 44576, 48556, 50944, 54656, 84973, 89152, 97112, 109312, 169946, 178304, 194224, 339892, 356608, 388448, 679784, 776896, 1359568, 1553792, 2719136, 3107584, 5438272, 10876544, 21753088]

約数ペア:

[(1, 21753088), (2, 10876544), (4, 5438272), (7, 3107584), (8, 2719136), (14, 1553792), (16, 1359568), (28, 776896), (32, 679784), (56, 388448), (61, 356608), (64, 339892), (112, 194224), (122, 178304), (128, 169946), (199, 109312), (224, 97112), (244, 89152), (256, 84973), (398, 54656), (427, 50944), (448, 48556), (488, 44576), (796, 27328), (854, 25472), (896, 24278), (976, 22288), (1393, 15616), (1592, 13664), (1708, 12736), (1792, 12139), (1952, 11144), (2786, 7808), (3184, 6832), (3416, 6368), (3904, 5572)]