81980990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{90089}}^1$

素因数の和:90116

約数の個数: 32

約数和(自身を含む): 181621440

約数和(自身を除く): 99640450

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 90089, 180178, 450445, 630623, 900890, 1171157, 1261246, 2342314, 3153115, 5855785, 6306230, 8198099, 11711570, 16396198, 40990495, 81980990]

約数ペア:

[(1, 81980990), (2, 40990495), (5, 16396198), (7, 11711570), (10, 8198099), (13, 6306230), (14, 5855785), (26, 3153115), (35, 2342314), (65, 1261246), (70, 1171157), (91, 900890), (130, 630623), (182, 450445), (455, 180178), (910, 90089)]