20917078

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{409}}^1$

素因数の和:712

約数の個数: 32

約数和(自身を含む): 38848320

約数和(自身を除く): 17931242

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 281, 409, 562, 818, 1967, 2863, 3653, 3934, 5317, 5726, 7306, 10634, 25571, 37219, 51142, 74438, 114929, 229858, 804503, 1494077, 1609006, 2988154, 10458539, 20917078]

約数ペア:

[(1, 20917078), (2, 10458539), (7, 2988154), (13, 1609006), (14, 1494077), (26, 804503), (91, 229858), (182, 114929), (281, 74438), (409, 51142), (562, 37219), (818, 25571), (1967, 10634), (2863, 7306), (3653, 5726), (3934, 5317)]