20890768

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{15731}}^1$

素因数の和:15822

約数の個数: 20

約数和(自身を含む): 40966128

約数和(自身を除く): 20075360

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 15731, 31462, 62924, 125848, 251696, 1305673, 2611346, 5222692, 10445384, 20890768]

約数ペア:

[(1, 20890768), (2, 10445384), (4, 5222692), (8, 2611346), (16, 1305673), (83, 251696), (166, 125848), (332, 62924), (664, 31462), (1328, 15731)]