12440020

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{941}}^1$

素因数の和:1611

約数の個数: 24

約数和(自身を含む): 26191368

約数和(自身を除く): 13751348

約数列:

[1, 2, 4, 5, 10, 20, 661, 941, 1322, 1882, 2644, 3305, 3764, 4705, 6610, 9410, 13220, 18820, 622001, 1244002, 2488004, 3110005, 6220010, 12440020]

約数ペア:

[(1, 12440020), (2, 6220010), (4, 3110005), (5, 2488004), (10, 1244002), (20, 622001), (661, 18820), (941, 13220), (1322, 9410), (1882, 6610), (2644, 4705), (3305, 3764)]