20180480

素因数分解:

$2^9\times 5^1\times {\mathrm{7883}}^1$

素因数の和:7906

約数の個数: 40

約数和(自身を含む): 48391992

約数和(自身を除く): 28211512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7883, 15766, 31532, 39415, 63064, 78830, 126128, 157660, 252256, 315320, 504512, 630640, 1009024, 1261280, 2018048, 2522560, 4036096, 5045120, 10090240, 20180480]

約数ペア:

[(1, 20180480), (2, 10090240), (4, 5045120), (5, 4036096), (8, 2522560), (10, 2018048), (16, 1261280), (20, 1009024), (32, 630640), (40, 504512), (64, 315320), (80, 252256), (128, 157660), (160, 126128), (256, 78830), (320, 63064), (512, 39415), (640, 31532), (1280, 15766), (2560, 7883)]