80909780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82561}}^1$

素因数の和:82584

約数の個数: 36

約数和(自身を含む): 197653428

約数和(自身を除く): 116743648

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82561, 165122, 330244, 412805, 577927, 825610, 1155854, 1651220, 2311708, 2889635, 4045489, 5779270, 8090978, 11558540, 16181956, 20227445, 40454890, 80909780]

約数ペア:

[(1, 80909780), (2, 40454890), (4, 20227445), (5, 16181956), (7, 11558540), (10, 8090978), (14, 5779270), (20, 4045489), (28, 2889635), (35, 2311708), (49, 1651220), (70, 1155854), (98, 825610), (140, 577927), (196, 412805), (245, 330244), (490, 165122), (980, 82561)]