18637480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 44712000

約数和(自身を除く): 26074520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 137, 152, 179, 190, 274, 358, 380, 548, 685, 716, 760, 895, 1096, 1370, 1432, 1790, 2603, 2740, 3401, 3580, 5206, 5480, 6802, 7160, 10412, 13015, 13604, 17005, 20824, 24523, 26030, 27208, 34010, 49046, 52060, 68020, 98092, 104120, 122615, 136040, 196184, 245230, 465937, 490460, 931874, 980920, 1863748, 2329685, 3727496, 4659370, 9318740, 18637480]

約数ペア:

[(1, 18637480), (2, 9318740), (4, 4659370), (5, 3727496), (8, 2329685), (10, 1863748), (19, 980920), (20, 931874), (38, 490460), (40, 465937), (76, 245230), (95, 196184), (137, 136040), (152, 122615), (179, 104120), (190, 98092), (274, 68020), (358, 52060), (380, 49046), (548, 34010), (685, 27208), (716, 26030), (760, 24523), (895, 20824), (1096, 17005), (1370, 13604), (1432, 13015), (1790, 10412), (2603, 7160), (2740, 6802), (3401, 5480), (3580, 5206)]