129177680

素因数分解:

$2^4\times 5^1\times {\mathrm{1614721}}^1$

素因数の和:1614734

約数の個数: 20

約数和(自身を含む): 300338292

約数和(自身を除く): 171160612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1614721, 3229442, 6458884, 8073605, 12917768, 16147210, 25835536, 32294420, 64588840, 129177680]

約数ペア:

[(1, 129177680), (2, 64588840), (4, 32294420), (5, 25835536), (8, 16147210), (10, 12917768), (16, 8073605), (20, 6458884), (40, 3229442), (80, 1614721)]