2018978864

素因数分解:

$2^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{131581}}^1$

素因数の和:131733

約数の個数: 40

約数和(自身を含む): 4503262368

約数和(自身を除く): 2484283504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 137, 274, 548, 959, 1096, 1918, 2192, 3836, 7672, 15344, 131581, 263162, 526324, 921067, 1052648, 1842134, 2105296, 3684268, 7368536, 14737072, 18026597, 36053194, 72106388, 126186179, 144212776, 252372358, 288425552, 504744716, 1009489432, 2018978864]

約数ペア:

[(1, 2018978864), (2, 1009489432), (4, 504744716), (7, 288425552), (8, 252372358), (14, 144212776), (16, 126186179), (28, 72106388), (56, 36053194), (112, 18026597), (137, 14737072), (274, 7368536), (548, 3684268), (959, 2105296), (1096, 1842134), (1918, 1052648), (2192, 921067), (3836, 526324), (7672, 263162), (15344, 131581)]