128980480

素因数分解:

$2^9\times 5^1\times {\mathrm{50383}}^1$

素因数の和:50406

約数の個数: 40

約数和(自身を含む): 309256992

約数和(自身を除く): 180276512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 50383, 100766, 201532, 251915, 403064, 503830, 806128, 1007660, 1612256, 2015320, 3224512, 4030640, 6449024, 8061280, 12898048, 16122560, 25796096, 32245120, 64490240, 128980480]

約数ペア:

[(1, 128980480), (2, 64490240), (4, 32245120), (5, 25796096), (8, 16122560), (10, 12898048), (16, 8061280), (20, 6449024), (32, 4030640), (40, 3224512), (64, 2015320), (80, 1612256), (128, 1007660), (160, 806128), (256, 503830), (320, 403064), (512, 251915), (640, 201532), (1280, 100766), (2560, 50383)]