21394390

素因数分解:

$2^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{13627}}^1$

素因数の和:13791

約数の個数: 16

約数和(自身を含む): 38758032

約数和(自身を除く): 17363642

約数列:

[1, 2, 5, 10, 157, 314, 785, 1570, 13627, 27254, 68135, 136270, 2139439, 4278878, 10697195, 21394390]

約数ペア:

[(1, 21394390), (2, 10697195), (5, 4278878), (10, 2139439), (157, 136270), (314, 68135), (785, 27254), (1570, 13627)]