18754792

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 23235608

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 71, 89, 106, 142, 178, 212, 284, 356, 371, 424, 497, 568, 623, 712, 742, 994, 1246, 1484, 1988, 2492, 2968, 3763, 3976, 4717, 4984, 6319, 7526, 9434, 12638, 15052, 18868, 25276, 26341, 30104, 33019, 37736, 44233, 50552, 52682, 66038, 88466, 105364, 132076, 176932, 210728, 264152, 334907, 353864, 669814, 1339628, 2344349, 2679256, 4688698, 9377396, 18754792]

約数ペア:

[(1, 18754792), (2, 9377396), (4, 4688698), (7, 2679256), (8, 2344349), (14, 1339628), (28, 669814), (53, 353864), (56, 334907), (71, 264152), (89, 210728), (106, 176932), (142, 132076), (178, 105364), (212, 88466), (284, 66038), (356, 52682), (371, 50552), (424, 44233), (497, 37736), (568, 33019), (623, 30104), (712, 26341), (742, 25276), (994, 18868), (1246, 15052), (1484, 12638), (1988, 9434), (2492, 7526), (2968, 6319), (3763, 4984), (3976, 4717)]