18889468

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{27943}}^1$

素因数の和:27973

約数の個数: 18

約数和(自身を含む): 35796264

約数和(自身を除く): 16906796

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 27943, 55886, 111772, 363259, 726518, 1453036, 4722367, 9444734, 18889468]

約数ペア:

[(1, 18889468), (2, 9444734), (4, 4722367), (13, 1453036), (26, 726518), (52, 363259), (169, 111772), (338, 55886), (676, 27943)]