638231569280

素因数分解:

$2^7\times 5^1\times {\mathrm{997236827}}^1$

素因数の和:997236846

約数の個数: 32

約数和(自身を含む): 1525772346840

約数和(自身を除く): 887540777560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 997236827, 1994473654, 3988947308, 4986184135, 7977894616, 9972368270, 15955789232, 19944736540, 31911578464, 39889473080, 63823156928, 79778946160, 127646313856, 159557892320, 319115784640, 638231569280]

約数ペア:

[(1, 638231569280), (2, 319115784640), (4, 159557892320), (5, 127646313856), (8, 79778946160), (10, 63823156928), (16, 39889473080), (20, 31911578464), (32, 19944736540), (40, 15955789232), (64, 9972368270), (80, 7977894616), (128, 4986184135), (160, 3988947308), (320, 1994473654), (640, 997236827)]