209123478

素因数分解:

$2^1\times 3^3\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{821}}^1$

素因数の和:974

約数の個数: 64

約数和(自身を含む): 479390400

約数和(自身を除く): 270266922

約数列:

[1, 2, 3, 6, 9, 18, 27, 53, 54, 89, 106, 159, 178, 267, 318, 477, 534, 801, 821, 954, 1431, 1602, 1642, 2403, 2463, 2862, 4717, 4806, 4926, 7389, 9434, 14151, 14778, 22167, 28302, 42453, 43513, 44334, 73069, 84906, 87026, 127359, 130539, 146138, 219207, 254718, 261078, 391617, 438414, 657621, 783234, 1174851, 1315242, 1972863, 2349702, 3872657, 3945726, 7745314, 11617971, 23235942, 34853913, 69707826, 104561739, 209123478]

約数ペア:

[(1, 209123478), (2, 104561739), (3, 69707826), (6, 34853913), (9, 23235942), (18, 11617971), (27, 7745314), (53, 3945726), (54, 3872657), (89, 2349702), (106, 1972863), (159, 1315242), (178, 1174851), (267, 783234), (318, 657621), (477, 438414), (534, 391617), (801, 261078), (821, 254718), (954, 219207), (1431, 146138), (1602, 130539), (1642, 127359), (2403, 87026), (2463, 84906), (2862, 73069), (4717, 44334), (4806, 43513), (4926, 42453), (7389, 28302), (9434, 22167), (14151, 14778)]