21867111

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 17531289

約数列:

[1, 3, 7, 9, 21, 27, 37, 53, 59, 63, 111, 159, 177, 189, 259, 333, 371, 413, 477, 531, 777, 999, 1113, 1239, 1431, 1593, 1961, 2183, 2331, 3127, 3339, 3717, 5883, 6549, 6993, 9381, 10017, 11151, 13727, 15281, 17649, 19647, 21889, 28143, 41181, 45843, 52947, 58941, 65667, 84429, 115699, 123543, 137529, 197001, 347097, 370629, 412587, 591003, 809893, 1041291, 2429679, 3123873, 7289037, 21867111]

約数ペア:

[(1, 21867111), (3, 7289037), (7, 3123873), (9, 2429679), (21, 1041291), (27, 809893), (37, 591003), (53, 412587), (59, 370629), (63, 347097), (111, 197001), (159, 137529), (177, 123543), (189, 115699), (259, 84429), (333, 65667), (371, 58941), (413, 52947), (477, 45843), (531, 41181), (777, 28143), (999, 21889), (1113, 19647), (1239, 17649), (1431, 15281), (1593, 13727), (1961, 11151), (2183, 10017), (2331, 9381), (3127, 6993), (3339, 6549), (3717, 5883)]