678208383

素因数分解:

$3^7\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 1080038400

約数和(自身を除く): 401830017

約数列:

[1, 3, 9, 23, 27, 69, 81, 97, 139, 207, 243, 291, 417, 621, 729, 873, 1251, 1863, 2187, 2231, 2619, 3197, 3753, 5589, 6693, 7857, 9591, 11259, 13483, 16767, 20079, 23571, 28773, 33777, 40449, 50301, 60237, 70713, 86319, 101331, 121347, 180711, 212139, 258957, 303993, 310109, 364041, 542133, 776871, 930327, 1092123, 1626399, 2330613, 2790981, 3276369, 4879197, 6991839, 8372943, 9829107, 25118829, 29487321, 75356487, 226069461, 678208383]

約数ペア:

[(1, 678208383), (3, 226069461), (9, 75356487), (23, 29487321), (27, 25118829), (69, 9829107), (81, 8372943), (97, 6991839), (139, 4879197), (207, 3276369), (243, 2790981), (291, 2330613), (417, 1626399), (621, 1092123), (729, 930327), (873, 776871), (1251, 542133), (1863, 364041), (2187, 310109), (2231, 303993), (2619, 258957), (3197, 212139), (3753, 180711), (5589, 121347), (6693, 101331), (7857, 86319), (9591, 70713), (11259, 60237), (13483, 50301), (16767, 40449), (20079, 33777), (23571, 28773)]