20554438

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1\times {\mathrm{509}}^1$

素因数の和:903

約数の個数: 16

約数和(自身を含む): 31493520

約数和(自身を除く): 10939082

約数列:

[1, 2, 61, 122, 331, 509, 662, 1018, 20191, 31049, 40382, 62098, 168479, 336958, 10277219, 20554438]

約数ペア:

[(1, 20554438), (2, 10277219), (61, 336958), (122, 168479), (331, 62098), (509, 40382), (662, 31049), (1018, 20191)]