280731444

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{457}}^1$

素因数の和:645

約数の個数: 96

約数和(自身を含む): 768208896

約数和(自身を除く): 487477452

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 84, 103, 142, 206, 213, 284, 309, 412, 426, 457, 497, 618, 721, 852, 914, 994, 1236, 1371, 1442, 1491, 1828, 1988, 2163, 2742, 2884, 2982, 3199, 4326, 5484, 5964, 6398, 7313, 8652, 9597, 12796, 14626, 19194, 21939, 29252, 32447, 38388, 43878, 47071, 51191, 64894, 87756, 94142, 97341, 102382, 129788, 141213, 153573, 188284, 194682, 204764, 227129, 282426, 307146, 329497, 389364, 454258, 564852, 614292, 658994, 681387, 908516, 988491, 1317988, 1362774, 1976982, 2725548, 3342041, 3953964, 6684082, 10026123, 13368164, 20052246, 23394287, 40104492, 46788574, 70182861, 93577148, 140365722, 280731444]

約数ペア:

[(1, 280731444), (2, 140365722), (3, 93577148), (4, 70182861), (6, 46788574), (7, 40104492), (12, 23394287), (14, 20052246), (21, 13368164), (28, 10026123), (42, 6684082), (71, 3953964), (84, 3342041), (103, 2725548), (142, 1976982), (206, 1362774), (213, 1317988), (284, 988491), (309, 908516), (412, 681387), (426, 658994), (457, 614292), (497, 564852), (618, 454258), (721, 389364), (852, 329497), (914, 307146), (994, 282426), (1236, 227129), (1371, 204764), (1442, 194682), (1491, 188284), (1828, 153573), (1988, 141213), (2163, 129788), (2742, 102382), (2884, 97341), (2982, 94142), (3199, 87756), (4326, 64894), (5484, 51191), (5964, 47071), (6398, 43878), (7313, 38388), (8652, 32447), (9597, 29252), (12796, 21939), (14626, 19194)]