20129955

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{78941}}^1$

素因数の和:78966

約数の個数: 16

約数和(自身を含む): 34102944

約数和(自身を除く): 13972989

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 78941, 236823, 394705, 1184115, 1341997, 4025991, 6709985, 20129955]

約数ペア:

[(1, 20129955), (3, 6709985), (5, 4025991), (15, 1341997), (17, 1184115), (51, 394705), (85, 236823), (255, 78941)]