21070295440

素因数分解:

$2^4\times 5^1\times {\mathrm{947}}^1\times {\mathrm{278119}}^1$

素因数の和:279079

約数の個数: 40

約数和(自身を含む): 49040343360

約数和(自身を除く): 27970047920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 947, 1894, 3788, 4735, 7576, 9470, 15152, 18940, 37880, 75760, 278119, 556238, 1112476, 1390595, 2224952, 2781190, 4449904, 5562380, 11124760, 22249520, 263378693, 526757386, 1053514772, 1316893465, 2107029544, 2633786930, 4214059088, 5267573860, 10535147720, 21070295440]

約数ペア:

[(1, 21070295440), (2, 10535147720), (4, 5267573860), (5, 4214059088), (8, 2633786930), (10, 2107029544), (16, 1316893465), (20, 1053514772), (40, 526757386), (80, 263378693), (947, 22249520), (1894, 11124760), (3788, 5562380), (4735, 4449904), (7576, 2781190), (9470, 2224952), (15152, 1390595), (18940, 1112476), (37880, 556238), (75760, 278119)]