21383978

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{727}}^1$

素因数の和:938

約数の個数: 32

約数和(自身を含む): 40255488

約数和(自身を除く): 18871510

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 191, 382, 727, 1337, 1454, 2101, 2674, 4202, 5089, 7997, 10178, 14707, 15994, 29414, 55979, 111958, 138857, 277714, 971999, 1527427, 1943998, 3054854, 10691989, 21383978]

約数ペア:

[(1, 21383978), (2, 10691989), (7, 3054854), (11, 1943998), (14, 1527427), (22, 971999), (77, 277714), (154, 138857), (191, 111958), (382, 55979), (727, 29414), (1337, 15994), (1454, 14707), (2101, 10178), (2674, 7997), (4202, 5089)]