204407680

素因数分解:

$2^7\times 5^1\times {\mathrm{319387}}^1$

素因数の和:319406

約数の個数: 32

約数和(自身を含む): 488663640

約数和(自身を除く): 284255960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 319387, 638774, 1277548, 1596935, 2555096, 3193870, 5110192, 6387740, 10220384, 12775480, 20440768, 25550960, 40881536, 51101920, 102203840, 204407680]

約数ペア:

[(1, 204407680), (2, 102203840), (4, 51101920), (5, 40881536), (8, 25550960), (10, 20440768), (16, 12775480), (20, 10220384), (32, 6387740), (40, 5110192), (64, 3193870), (80, 2555096), (128, 1596935), (160, 1277548), (320, 638774), (640, 319387)]