215511813

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{211}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 370406400

約数和(自身を除く): 154894587

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 99, 171, 181, 209, 211, 297, 513, 543, 627, 633, 1629, 1881, 1899, 1991, 2321, 3439, 4009, 4887, 5643, 5697, 5973, 6963, 10317, 12027, 17919, 20889, 30951, 36081, 37829, 38191, 44099, 53757, 62667, 92853, 108243, 113487, 114573, 132297, 340461, 343719, 396891, 420101, 725629, 1021383, 1031157, 1190673, 1260303, 2176887, 3780909, 6530661, 7981919, 11342727, 19591983, 23945757, 71837271, 215511813]

約数ペア:

[(1, 215511813), (3, 71837271), (9, 23945757), (11, 19591983), (19, 11342727), (27, 7981919), (33, 6530661), (57, 3780909), (99, 2176887), (171, 1260303), (181, 1190673), (209, 1031157), (211, 1021383), (297, 725629), (513, 420101), (543, 396891), (627, 343719), (633, 340461), (1629, 132297), (1881, 114573), (1899, 113487), (1991, 108243), (2321, 92853), (3439, 62667), (4009, 53757), (4887, 44099), (5643, 38191), (5697, 37829), (5973, 36081), (6963, 30951), (10317, 20889), (12027, 17919)]