321016840

素因数分解:

$2^3\times 5^1\times {\mathrm{8025421}}^1$

素因数の和:8025432

約数の個数: 16

約数和(自身を含む): 722287980

約数和(自身を除く): 401271140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 8025421, 16050842, 32101684, 40127105, 64203368, 80254210, 160508420, 321016840]

約数ペア:

[(1, 321016840), (2, 160508420), (4, 80254210), (5, 64203368), (8, 40127105), (10, 32101684), (20, 16050842), (40, 8025421)]