640010090

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1729757}}^1$

素因数の和:1729801

約数の個数: 16

約数和(自身を含む): 1183154472

約数和(自身を除く): 543144382

約数列:

[1, 2, 5, 10, 37, 74, 185, 370, 1729757, 3459514, 8648785, 17297570, 64001009, 128002018, 320005045, 640010090]

約数ペア:

[(1, 640010090), (2, 320005045), (5, 128002018), (10, 64001009), (37, 17297570), (74, 8648785), (185, 3459514), (370, 1729757)]