155635910

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1\times {\mathrm{397}}^1$

素因数の和:800

約数の個数: 32

約数和(自身を含む): 283694400

約数和(自身を除く): 128058490

約数列:

[1, 2, 5, 10, 197, 199, 394, 397, 398, 794, 985, 995, 1970, 1985, 1990, 3970, 39203, 78209, 78406, 79003, 156418, 158006, 196015, 391045, 392030, 395015, 782090, 790030, 15563591, 31127182, 77817955, 155635910]

約数ペア:

[(1, 155635910), (2, 77817955), (5, 31127182), (10, 15563591), (197, 790030), (199, 782090), (394, 395015), (397, 392030), (398, 391045), (794, 196015), (985, 158006), (995, 156418), (1970, 79003), (1985, 78406), (1990, 78209), (3970, 39203)]