81804520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41737}}^1$

素因数の和:41762

約数の個数: 48

約数和(自身を含む): 214115940

約数和(自身を除く): 132311420

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 41737, 83474, 166948, 208685, 292159, 333896, 417370, 584318, 834740, 1168636, 1460795, 1669480, 2045113, 2337272, 2921590, 4090226, 5843180, 8180452, 10225565, 11686360, 16360904, 20451130, 40902260, 81804520]

約数ペア:

[(1, 81804520), (2, 40902260), (4, 20451130), (5, 16360904), (7, 11686360), (8, 10225565), (10, 8180452), (14, 5843180), (20, 4090226), (28, 2921590), (35, 2337272), (40, 2045113), (49, 1669480), (56, 1460795), (70, 1168636), (98, 834740), (140, 584318), (196, 417370), (245, 333896), (280, 292159), (392, 208685), (490, 166948), (980, 83474), (1960, 41737)]