131396480

素因数分解:

$2^7\times 5^1\times {\mathrm{205307}}^1$

素因数の和:205326

約数の個数: 32

約数和(自身を含む): 314121240

約数和(自身を除く): 182724760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 205307, 410614, 821228, 1026535, 1642456, 2053070, 3284912, 4106140, 6569824, 8212280, 13139648, 16424560, 26279296, 32849120, 65698240, 131396480]

約数ペア:

[(1, 131396480), (2, 65698240), (4, 32849120), (5, 26279296), (8, 16424560), (10, 13139648), (16, 8212280), (20, 6569824), (32, 4106140), (40, 3284912), (64, 2053070), (80, 1642456), (128, 1026535), (160, 821228), (320, 410614), (640, 205307)]