78801280

素因数分解:

$2^7\times 5^1\times {\mathrm{123127}}^1$

素因数の和:123146

約数の個数: 32

約数和(自身を含む): 188385840

約数和(自身を除く): 109584560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 123127, 246254, 492508, 615635, 985016, 1231270, 1970032, 2462540, 3940064, 4925080, 7880128, 9850160, 15760256, 19700320, 39400640, 78801280]

約数ペア:

[(1, 78801280), (2, 39400640), (4, 19700320), (5, 15760256), (8, 9850160), (10, 7880128), (16, 4925080), (20, 3940064), (32, 2462540), (40, 1970032), (64, 1231270), (80, 985016), (128, 615635), (160, 492508), (320, 246254), (640, 123127)]