81789778

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:586

約数の個数: 32

約数和(自身を含む): 142700544

約数和(自身を除く): 60910766

約数列:

[1, 2, 7, 14, 127, 157, 254, 293, 314, 586, 889, 1099, 1778, 2051, 2198, 4102, 19939, 37211, 39878, 46001, 74422, 92002, 139573, 260477, 279146, 322007, 520954, 644014, 5842127, 11684254, 40894889, 81789778]

約数ペア:

[(1, 81789778), (2, 40894889), (7, 11684254), (14, 5842127), (127, 644014), (157, 520954), (254, 322007), (293, 279146), (314, 260477), (586, 139573), (889, 92002), (1099, 74422), (1778, 46001), (2051, 39878), (2198, 37211), (4102, 19939)]