201908889

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2221}}^1$

素因数の和:2287

約数の個数: 64

約数和(自身を含む): 378273280

約数和(自身を除く): 176364391

約数列:

[1, 3, 7, 9, 13, 21, 27, 37, 39, 63, 91, 111, 117, 189, 259, 273, 333, 351, 481, 777, 819, 999, 1443, 2221, 2331, 2457, 3367, 4329, 6663, 6993, 10101, 12987, 15547, 19989, 28873, 30303, 46641, 59967, 82177, 86619, 90909, 139923, 202111, 246531, 259857, 419769, 575239, 606333, 739593, 779571, 1068301, 1725717, 1818999, 2218779, 3204903, 5177151, 5456997, 7478107, 9614709, 15531453, 22434321, 28844127, 67302963, 201908889]

約数ペア:

[(1, 201908889), (3, 67302963), (7, 28844127), (9, 22434321), (13, 15531453), (21, 9614709), (27, 7478107), (37, 5456997), (39, 5177151), (63, 3204903), (91, 2218779), (111, 1818999), (117, 1725717), (189, 1068301), (259, 779571), (273, 739593), (333, 606333), (351, 575239), (481, 419769), (777, 259857), (819, 246531), (999, 202111), (1443, 139923), (2221, 90909), (2331, 86619), (2457, 82177), (3367, 59967), (4329, 46641), (6663, 30303), (6993, 28873), (10101, 19989), (12987, 15547)]