20148849

素因数分解:

$3^2\times 7^3\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:195

約数の個数: 48

約数和(自身を含む): 34819200

約数和(自身を除く): 14670351

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 107, 147, 183, 321, 343, 427, 441, 549, 749, 963, 1029, 1281, 2247, 2989, 3087, 3843, 5243, 6527, 6741, 8967, 15729, 19581, 20923, 26901, 36701, 45689, 47187, 58743, 62769, 110103, 137067, 188307, 319823, 330309, 411201, 959469, 2238761, 2878407, 6716283, 20148849]

約数ペア:

[(1, 20148849), (3, 6716283), (7, 2878407), (9, 2238761), (21, 959469), (49, 411201), (61, 330309), (63, 319823), (107, 188307), (147, 137067), (183, 110103), (321, 62769), (343, 58743), (427, 47187), (441, 45689), (549, 36701), (749, 26901), (963, 20923), (1029, 19581), (1281, 15729), (2247, 8967), (2989, 6741), (3087, 6527), (3843, 5243)]