8205440

素因数分解:

$2^7\times 5^1\times {\mathrm{12821}}^1$

素因数の和:12840

約数の個数: 32

約数和(自身を含む): 19617660

約数和(自身を除く): 11412220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 12821, 25642, 51284, 64105, 102568, 128210, 205136, 256420, 410272, 512840, 820544, 1025680, 1641088, 2051360, 4102720, 8205440]

約数ペア:

[(1, 8205440), (2, 4102720), (4, 2051360), (5, 1641088), (8, 1025680), (10, 820544), (16, 512840), (20, 410272), (32, 256420), (40, 205136), (64, 128210), (80, 102568), (128, 64105), (160, 51284), (320, 25642), (640, 12821)]