20176840

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13633}}^1$

素因数の和:13681

約数の個数: 32

約数和(自身を含む): 46628280

約数和(自身を除く): 26451440

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13633, 27266, 54532, 68165, 109064, 136330, 272660, 504421, 545320, 1008842, 2017684, 2522105, 4035368, 5044210, 10088420, 20176840]

約数ペア:

[(1, 20176840), (2, 10088420), (4, 5044210), (5, 4035368), (8, 2522105), (10, 2017684), (20, 1008842), (37, 545320), (40, 504421), (74, 272660), (148, 136330), (185, 109064), (296, 68165), (370, 54532), (740, 27266), (1480, 13633)]