20742057

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 36796032

約数和(自身を除く): 16053975

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 107, 119, 153, 181, 321, 357, 543, 749, 963, 1071, 1267, 1629, 1819, 2247, 3077, 3801, 5457, 6741, 9231, 11403, 12733, 16371, 19367, 21539, 27693, 38199, 58101, 64617, 114597, 135569, 174303, 193851, 329239, 406707, 987717, 1220121, 2304673, 2963151, 6914019, 20742057]

約数ペア:

[(1, 20742057), (3, 6914019), (7, 2963151), (9, 2304673), (17, 1220121), (21, 987717), (51, 406707), (63, 329239), (107, 193851), (119, 174303), (153, 135569), (181, 114597), (321, 64617), (357, 58101), (543, 38199), (749, 27693), (963, 21539), (1071, 19367), (1267, 16371), (1629, 12733), (1819, 11403), (2247, 9231), (3077, 6741), (3801, 5457)]