79990720

素因数分解:

$2^6\times 5^1\times {\mathrm{249971}}^1$

素因数の和:249988

約数の個数: 28

約数和(自身を含む): 190478664

約数和(自身を除く): 110487944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 249971, 499942, 999884, 1249855, 1999768, 2499710, 3999536, 4999420, 7999072, 9998840, 15998144, 19997680, 39995360, 79990720]

約数ペア:

[(1, 79990720), (2, 39995360), (4, 19997680), (5, 15998144), (8, 9998840), (10, 7999072), (16, 4999420), (20, 3999536), (32, 2499710), (40, 1999768), (64, 1249855), (80, 999884), (160, 499942), (320, 249971)]