2972781

素因数分解:

$3^4\times 7^3\times {\mathrm{107}}^1$

素因数の和:140

約数の個数: 40

約数和(自身を含む): 5227200

約数和(自身を除く): 2254419

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 107, 147, 189, 321, 343, 441, 567, 749, 963, 1029, 1323, 2247, 2889, 3087, 3969, 5243, 6741, 8667, 9261, 15729, 20223, 27783, 36701, 47187, 60669, 110103, 141561, 330309, 424683, 990927, 2972781]

約数ペア:

[(1, 2972781), (3, 990927), (7, 424683), (9, 330309), (21, 141561), (27, 110103), (49, 60669), (63, 47187), (81, 36701), (107, 27783), (147, 20223), (189, 15729), (321, 9261), (343, 8667), (441, 6741), (567, 5243), (749, 3969), (963, 3087), (1029, 2889), (1323, 2247)]