18819440

素因数分解:

$2^4\times 5^1\times {\mathrm{235243}}^1$

素因数の和:235256

約数の個数: 20

約数和(自身を含む): 43755384

約数和(自身を除く): 24935944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 235243, 470486, 940972, 1176215, 1881944, 2352430, 3763888, 4704860, 9409720, 18819440]

約数ペア:

[(1, 18819440), (2, 9409720), (4, 4704860), (5, 3763888), (8, 2352430), (10, 1881944), (16, 1176215), (20, 940972), (40, 470486), (80, 235243)]