890235880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{27241}}^1$

素因数の和:27314

約数の個数: 64

約数和(自身を含む): 2157566400

約数和(自身を除く): 1267330520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 3268, 4085, 6536, 8170, 16340, 27241, 32680, 54482, 108964, 136205, 217928, 272410, 517579, 544820, 1035158, 1089640, 1171363, 2070316, 2342726, 2587895, 4140632, 4685452, 5175790, 5856815, 9370904, 10351580, 11713630, 20703160, 22255897, 23427260, 44511794, 46854520, 89023588, 111279485, 178047176, 222558970, 445117940, 890235880]

約数ペア:

[(1, 890235880), (2, 445117940), (4, 222558970), (5, 178047176), (8, 111279485), (10, 89023588), (19, 46854520), (20, 44511794), (38, 23427260), (40, 22255897), (43, 20703160), (76, 11713630), (86, 10351580), (95, 9370904), (152, 5856815), (172, 5175790), (190, 4685452), (215, 4140632), (344, 2587895), (380, 2342726), (430, 2070316), (760, 1171363), (817, 1089640), (860, 1035158), (1634, 544820), (1720, 517579), (3268, 272410), (4085, 217928), (6536, 136205), (8170, 108964), (16340, 54482), (27241, 32680)]