28289877

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 50319360

約数和(自身を除く): 22029483

約数列:

[1, 3, 7, 11, 21, 29, 33, 41, 77, 87, 103, 123, 203, 231, 287, 309, 319, 451, 609, 721, 861, 957, 1133, 1189, 1353, 2163, 2233, 2987, 3157, 3399, 3567, 4223, 6699, 7931, 8323, 8961, 9471, 12669, 13079, 20909, 23793, 24969, 29561, 32857, 39237, 46453, 62727, 88683, 91553, 98571, 122467, 139359, 229999, 274659, 325171, 367401, 689997, 857269, 975513, 1347137, 2571807, 4041411, 9429959, 28289877]

約数ペア:

[(1, 28289877), (3, 9429959), (7, 4041411), (11, 2571807), (21, 1347137), (29, 975513), (33, 857269), (41, 689997), (77, 367401), (87, 325171), (103, 274659), (123, 229999), (203, 139359), (231, 122467), (287, 98571), (309, 91553), (319, 88683), (451, 62727), (609, 46453), (721, 39237), (861, 32857), (957, 29561), (1133, 24969), (1189, 23793), (1353, 20909), (2163, 13079), (2233, 12669), (2987, 9471), (3157, 8961), (3399, 8323), (3567, 7931), (4223, 6699)]