28103907

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 47416320

約数和(自身を除く): 19312413

約数列:

[1, 3, 13, 17, 19, 23, 39, 51, 57, 69, 97, 221, 247, 291, 299, 323, 391, 437, 663, 741, 897, 969, 1173, 1261, 1311, 1649, 1843, 2231, 3783, 4199, 4947, 5083, 5529, 5681, 6693, 7429, 12597, 15249, 17043, 21437, 22287, 23959, 29003, 31331, 37927, 42389, 64311, 71877, 87009, 93993, 96577, 113781, 127167, 289731, 407303, 493051, 551057, 720613, 1221909, 1479153, 1653171, 2161839, 9367969, 28103907]

約数ペア:

[(1, 28103907), (3, 9367969), (13, 2161839), (17, 1653171), (19, 1479153), (23, 1221909), (39, 720613), (51, 551057), (57, 493051), (69, 407303), (97, 289731), (221, 127167), (247, 113781), (291, 96577), (299, 93993), (323, 87009), (391, 71877), (437, 64311), (663, 42389), (741, 37927), (897, 31331), (969, 29003), (1173, 23959), (1261, 22287), (1311, 21437), (1649, 17043), (1843, 15249), (2231, 12597), (3783, 7429), (4199, 6693), (4947, 5681), (5083, 5529)]