21761649

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1$

素因数の和:567

約数の個数: 64

約数和(自身を含む): 42094080

約数和(自身を除く): 20332431

約数列:

[1, 3, 7, 9, 13, 17, 21, 27, 39, 51, 63, 91, 117, 119, 153, 189, 221, 273, 351, 357, 459, 521, 663, 819, 1071, 1547, 1563, 1989, 2457, 3213, 3647, 4641, 4689, 5967, 6773, 8857, 10941, 13923, 14067, 20319, 26571, 32823, 41769, 47411, 60957, 61999, 79713, 98469, 115141, 142233, 182871, 185997, 239139, 345423, 426699, 557991, 805987, 1036269, 1280097, 1673973, 2417961, 3108807, 7253883, 21761649]

約数ペア:

[(1, 21761649), (3, 7253883), (7, 3108807), (9, 2417961), (13, 1673973), (17, 1280097), (21, 1036269), (27, 805987), (39, 557991), (51, 426699), (63, 345423), (91, 239139), (117, 185997), (119, 182871), (153, 142233), (189, 115141), (221, 98469), (273, 79713), (351, 61999), (357, 60957), (459, 47411), (521, 41769), (663, 32823), (819, 26571), (1071, 20319), (1547, 14067), (1563, 13923), (1989, 10941), (2457, 8857), (3213, 6773), (3647, 5967), (4641, 4689)]