21251512

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{24371}}^1$

素因数の和:24486

約数の個数: 16

約数和(自身を含む): 40213800

約数和(自身を除く): 18962288

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 24371, 48742, 97484, 194968, 2656439, 5312878, 10625756, 21251512]

約数ペア:

[(1, 21251512), (2, 10625756), (4, 5312878), (8, 2656439), (109, 194968), (218, 97484), (436, 48742), (872, 24371)]