19870342

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{509}}^1$

素因数の和:791

約数の個数: 16

約数和(自身を含む): 30294000

約数和(自身を除く): 10423658

約数列:

[1, 2, 131, 149, 262, 298, 509, 1018, 19519, 39038, 66679, 75841, 133358, 151682, 9935171, 19870342]

約数ペア:

[(1, 19870342), (2, 9935171), (131, 151682), (149, 133358), (262, 75841), (298, 66679), (509, 39038), (1018, 19519)]