20176988840

素因数分解:

$2^3\times 5^1\times {\mathrm{15749}}^1\times {\mathrm{32029}}^1$

素因数の和:47789

約数の個数: 32

約数和(自身を含む): 45402525000

約数和(自身を除く): 25225536160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 15749, 31498, 32029, 62996, 64058, 78745, 125992, 128116, 157490, 160145, 256232, 314980, 320290, 629960, 640580, 1281160, 504424721, 1008849442, 2017698884, 2522123605, 4035397768, 5044247210, 10088494420, 20176988840]

約数ペア:

[(1, 20176988840), (2, 10088494420), (4, 5044247210), (5, 4035397768), (8, 2522123605), (10, 2017698884), (20, 1008849442), (40, 504424721), (15749, 1281160), (31498, 640580), (32029, 629960), (62996, 320290), (64058, 314980), (78745, 256232), (125992, 160145), (128116, 157490)]