21315488

素因数分解:

$2^5\times {\mathrm{666109}}^1$

素因数の和:666119

約数の個数: 12

約数和(自身を含む): 41964930

約数和(自身を除く): 20649442

約数列:

[1, 2, 4, 8, 16, 32, 666109, 1332218, 2664436, 5328872, 10657744, 21315488]

約数ペア:

[(1, 21315488), (2, 10657744), (4, 5328872), (8, 2664436), (16, 1332218), (32, 666109)]