1991107010

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2137}}^1\times {\mathrm{4051}}^1$

素因数の和:6218

約数の個数: 32

約数和(自身を含む): 3742492032

約数和(自身を除く): 1751385022

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 2137, 4051, 4274, 8102, 10685, 20255, 21370, 40510, 49151, 93173, 98302, 186346, 245755, 465865, 491510, 931730, 8656987, 17313974, 43284935, 86569870, 199110701, 398221402, 995553505, 1991107010]

約数ペア:

[(1, 1991107010), (2, 995553505), (5, 398221402), (10, 199110701), (23, 86569870), (46, 43284935), (115, 17313974), (230, 8656987), (2137, 931730), (4051, 491510), (4274, 465865), (8102, 245755), (10685, 186346), (20255, 98302), (21370, 93173), (40510, 49151)]