218739969

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 393737760

約数和(自身を除く): 174997791

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 163, 179, 357, 441, 489, 537, 833, 1071, 1141, 1253, 1467, 1611, 2499, 2771, 3043, 3423, 3759, 7497, 7987, 8313, 8771, 9129, 10269, 11277, 19397, 21301, 23961, 24939, 26313, 27387, 29177, 58191, 63903, 71883, 78939, 87531, 135779, 149107, 174573, 191709, 204239, 262593, 407337, 447321, 496009, 612717, 1222011, 1341963, 1429673, 1488027, 1838151, 3472063, 4289019, 4464081, 10416189, 12867057, 24304441, 31248567, 72913323, 218739969]

約数ペア:

[(1, 218739969), (3, 72913323), (7, 31248567), (9, 24304441), (17, 12867057), (21, 10416189), (49, 4464081), (51, 4289019), (63, 3472063), (119, 1838151), (147, 1488027), (153, 1429673), (163, 1341963), (179, 1222011), (357, 612717), (441, 496009), (489, 447321), (537, 407337), (833, 262593), (1071, 204239), (1141, 191709), (1253, 174573), (1467, 149107), (1611, 135779), (2499, 87531), (2771, 78939), (3043, 71883), (3423, 63903), (3759, 58191), (7497, 29177), (7987, 27387), (8313, 26313), (8771, 24939), (9129, 23961), (10269, 21301), (11277, 19397)]