20199519

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^2$

素因数の和:176

約数の個数: 36

約数和(自身を含む): 32157216

約数和(自身を除く): 11957697

約数列:

[1, 3, 9, 17, 47, 51, 53, 141, 153, 159, 423, 477, 799, 901, 2397, 2491, 2703, 2809, 7191, 7473, 8109, 8427, 22419, 25281, 42347, 47753, 127041, 132023, 143259, 381123, 396069, 429777, 1188207, 2244391, 6733173, 20199519]

約数ペア:

[(1, 20199519), (3, 6733173), (9, 2244391), (17, 1188207), (47, 429777), (51, 396069), (53, 381123), (141, 143259), (153, 132023), (159, 127041), (423, 47753), (477, 42347), (799, 25281), (901, 22419), (2397, 8427), (2491, 8109), (2703, 7473), (2809, 7191)]