28912257

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 20620863

約数列:

[1, 3, 9, 11, 17, 33, 41, 51, 99, 123, 153, 187, 369, 419, 451, 561, 697, 1257, 1353, 1683, 2091, 3771, 4059, 4609, 6273, 7123, 7667, 13827, 17179, 21369, 23001, 41481, 51537, 64107, 69003, 78353, 154611, 188969, 235059, 292043, 566907, 705177, 876129, 1700721, 2628387, 3212473, 9637419, 28912257]

約数ペア:

[(1, 28912257), (3, 9637419), (9, 3212473), (11, 2628387), (17, 1700721), (33, 876129), (41, 705177), (51, 566907), (99, 292043), (123, 235059), (153, 188969), (187, 154611), (369, 78353), (419, 69003), (451, 64107), (561, 51537), (697, 41481), (1257, 23001), (1353, 21369), (1683, 17179), (2091, 13827), (3771, 7667), (4059, 7123), (4609, 6273)]