20995150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{647}}^1$

素因数の和:729

約数の個数: 48

約数和(自身を含む): 43390080

約数和(自身を除く): 22394930

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 59, 110, 118, 275, 295, 550, 590, 647, 649, 1294, 1298, 1475, 2950, 3235, 3245, 6470, 6490, 7117, 14234, 16175, 16225, 32350, 32450, 35585, 38173, 71170, 76346, 177925, 190865, 355850, 381730, 419903, 839806, 954325, 1908650, 2099515, 4199030, 10497575, 20995150]

約数ペア:

[(1, 20995150), (2, 10497575), (5, 4199030), (10, 2099515), (11, 1908650), (22, 954325), (25, 839806), (50, 419903), (55, 381730), (59, 355850), (110, 190865), (118, 177925), (275, 76346), (295, 71170), (550, 38173), (590, 35585), (647, 32450), (649, 32350), (1294, 16225), (1298, 16175), (1475, 14234), (2950, 7117), (3235, 6490), (3245, 6470)]