21330810

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{397}}^1$

素因数の和:612

約数の個数: 64

約数和(自身を含む): 57312000

約数和(自身を除く): 35981190

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 199, 270, 397, 398, 597, 794, 995, 1191, 1194, 1791, 1985, 1990, 2382, 2985, 3573, 3582, 3970, 5373, 5955, 5970, 7146, 8955, 10719, 10746, 11910, 17865, 17910, 21438, 26865, 35730, 53595, 53730, 79003, 107190, 158006, 237009, 395015, 474018, 711027, 790030, 1185045, 1422054, 2133081, 2370090, 3555135, 4266162, 7110270, 10665405, 21330810]

約数ペア:

[(1, 21330810), (2, 10665405), (3, 7110270), (5, 4266162), (6, 3555135), (9, 2370090), (10, 2133081), (15, 1422054), (18, 1185045), (27, 790030), (30, 711027), (45, 474018), (54, 395015), (90, 237009), (135, 158006), (199, 107190), (270, 79003), (397, 53730), (398, 53595), (597, 35730), (794, 26865), (995, 21438), (1191, 17910), (1194, 17865), (1791, 11910), (1985, 10746), (1990, 10719), (2382, 8955), (2985, 7146), (3573, 5970), (3582, 5955), (3970, 5373)]