28291978

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2$

素因数の和:100

約数の個数: 72

約数和(自身を含む): 55603044

約数和(自身を除く): 27311066

約数列:

[1, 2, 11, 13, 17, 22, 23, 26, 34, 46, 121, 143, 187, 221, 242, 253, 286, 299, 374, 391, 442, 506, 529, 598, 782, 1058, 1573, 2057, 2431, 2783, 3146, 3289, 4114, 4301, 4862, 5083, 5566, 5819, 6578, 6877, 8602, 8993, 10166, 11638, 13754, 17986, 26741, 36179, 47311, 53482, 55913, 64009, 72358, 75647, 94622, 98923, 111826, 116909, 128018, 151294, 197846, 233818, 615043, 832117, 1088153, 1230086, 1285999, 1664234, 2176306, 2571998, 14145989, 28291978]

約数ペア:

[(1, 28291978), (2, 14145989), (11, 2571998), (13, 2176306), (17, 1664234), (22, 1285999), (23, 1230086), (26, 1088153), (34, 832117), (46, 615043), (121, 233818), (143, 197846), (187, 151294), (221, 128018), (242, 116909), (253, 111826), (286, 98923), (299, 94622), (374, 75647), (391, 72358), (442, 64009), (506, 55913), (529, 53482), (598, 47311), (782, 36179), (1058, 26741), (1573, 17986), (2057, 13754), (2431, 11638), (2783, 10166), (3146, 8993), (3289, 8602), (4114, 6877), (4301, 6578), (4862, 5819), (5083, 5566)]