20664272

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{12539}}^1$

素因数の和:12650

約数の個数: 20

約数和(自身を含む): 40428960

約数和(自身を除く): 19764688

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 12539, 25078, 50156, 100312, 200624, 1291517, 2583034, 5166068, 10332136, 20664272]

約数ペア:

[(1, 20664272), (2, 10332136), (4, 5166068), (8, 2583034), (16, 1291517), (103, 200624), (206, 100312), (412, 50156), (824, 25078), (1648, 12539)]