18768885940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{135281}}^1$

素因数の和:136288

約数の個数: 48

約数和(自身を含む): 45091113984

約数和(自身を除く): 26322228044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991, 1982, 3964, 4955, 6937, 9910, 13874, 19820, 27748, 34685, 69370, 135281, 138740, 270562, 541124, 676405, 946967, 1352810, 1893934, 2705620, 3787868, 4734835, 9469670, 18939340, 134063471, 268126942, 536253884, 670317355, 938444297, 1340634710, 1876888594, 2681269420, 3753777188, 4692221485, 9384442970, 18768885940]

約数ペア:

[(1, 18768885940), (2, 9384442970), (4, 4692221485), (5, 3753777188), (7, 2681269420), (10, 1876888594), (14, 1340634710), (20, 938444297), (28, 670317355), (35, 536253884), (70, 268126942), (140, 134063471), (991, 18939340), (1982, 9469670), (3964, 4734835), (4955, 3787868), (6937, 2705620), (9910, 1893934), (13874, 1352810), (19820, 946967), (27748, 676405), (34685, 541124), (69370, 270562), (135281, 138740)]