18120020

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{5237}}^1$

素因数の和:5419

約数の個数: 24

約数和(自身を含む): 38279304

約数和(自身を除く): 20159284

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 5237, 10474, 20948, 26185, 52370, 104740, 906001, 1812002, 3624004, 4530005, 9060010, 18120020]

約数ペア:

[(1, 18120020), (2, 9060010), (4, 4530005), (5, 3624004), (10, 1812002), (20, 906001), (173, 104740), (346, 52370), (692, 26185), (865, 20948), (1730, 10474), (3460, 5237)]