217532690

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{55921}}^1$

素因数の和:56317

約数の個数: 16

約数和(自身を含む): 392572440

約数和(自身を除く): 175039750

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 55921, 111842, 279605, 559210, 21753269, 43506538, 108766345, 217532690]

約数ペア:

[(1, 217532690), (2, 108766345), (5, 43506538), (10, 21753269), (389, 559210), (778, 279605), (1945, 111842), (3890, 55921)]