20877440

素因数分解:

$2^7\times 5^1\times {\mathrm{32621}}^1$

素因数の和:32640

約数の個数: 32

約数和(自身を含む): 49911660

約数和(自身を除く): 29034220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32621, 65242, 130484, 163105, 260968, 326210, 521936, 652420, 1043872, 1304840, 2087744, 2609680, 4175488, 5219360, 10438720, 20877440]

約数ペア:

[(1, 20877440), (2, 10438720), (4, 5219360), (5, 4175488), (8, 2609680), (10, 2087744), (16, 1304840), (20, 1043872), (32, 652420), (40, 521936), (64, 326210), (80, 260968), (128, 163105), (160, 130484), (320, 65242), (640, 32621)]