209358891

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{337}}^1$

素因数の和:545

約数の個数: 64

約数和(自身を含む): 376396800

約数和(自身を除く): 167037909

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 173, 189, 337, 399, 513, 519, 1011, 1197, 1211, 1557, 2359, 3033, 3287, 3591, 3633, 4671, 6403, 7077, 9099, 9861, 10899, 19209, 21231, 23009, 29583, 32697, 44821, 57627, 58301, 63693, 69027, 88749, 134463, 172881, 174903, 207081, 403389, 408107, 524709, 621243, 1107719, 1210167, 1224321, 1574127, 3323157, 3672963, 7754033, 9969471, 11018889, 23262099, 29908413, 69786297, 209358891]

約数ペア:

[(1, 209358891), (3, 69786297), (7, 29908413), (9, 23262099), (19, 11018889), (21, 9969471), (27, 7754033), (57, 3672963), (63, 3323157), (133, 1574127), (171, 1224321), (173, 1210167), (189, 1107719), (337, 621243), (399, 524709), (513, 408107), (519, 403389), (1011, 207081), (1197, 174903), (1211, 172881), (1557, 134463), (2359, 88749), (3033, 69027), (3287, 63693), (3591, 58301), (3633, 57627), (4671, 44821), (6403, 32697), (7077, 29583), (9099, 23009), (9861, 21231), (10899, 19209)]