221280388

素因数分解:

$2^2\times 7^1\times {\mathrm{7902871}}^1$

素因数の和:7902882

約数の個数: 12

約数和(自身を含む): 442560832

約数和(自身を除く): 221280444

約数列:

[1, 2, 4, 7, 14, 28, 7902871, 15805742, 31611484, 55320097, 110640194, 221280388]

約数ペア:

[(1, 221280388), (2, 110640194), (4, 55320097), (7, 31611484), (14, 15805742), (28, 7902871)]