21718004

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{659}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26182156

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 107, 154, 214, 308, 428, 659, 749, 1177, 1318, 1498, 2354, 2636, 2996, 4613, 4708, 7249, 8239, 9226, 14498, 16478, 18452, 28996, 32956, 50743, 70513, 101486, 141026, 202972, 282052, 493591, 775643, 987182, 1551286, 1974364, 3102572, 5429501, 10859002, 21718004]

約数ペア:

[(1, 21718004), (2, 10859002), (4, 5429501), (7, 3102572), (11, 1974364), (14, 1551286), (22, 987182), (28, 775643), (44, 493591), (77, 282052), (107, 202972), (154, 141026), (214, 101486), (308, 70513), (428, 50743), (659, 32956), (749, 28996), (1177, 18452), (1318, 16478), (1498, 14498), (2354, 9226), (2636, 8239), (2996, 7249), (4613, 4708)]