21426052

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{487}}^1\times {\mathrm{647}}^1$

素因数の和:1155

約数の個数: 24

約数和(自身を含む): 39844224

約数和(自身を除く): 18418172

約数列:

[1, 2, 4, 17, 34, 68, 487, 647, 974, 1294, 1948, 2588, 8279, 10999, 16558, 21998, 33116, 43996, 315089, 630178, 1260356, 5356513, 10713026, 21426052]

約数ペア:

[(1, 21426052), (2, 10713026), (4, 5356513), (17, 1260356), (34, 630178), (68, 315089), (487, 43996), (647, 33116), (974, 21998), (1294, 16558), (1948, 10999), (2588, 8279)]