221567157

素因数分解:

$3^7\times 7^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 390136320

約数和(自身を除く): 168569163

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 81, 123, 189, 243, 287, 353, 369, 567, 729, 861, 1059, 1107, 1701, 2187, 2471, 2583, 3177, 3321, 5103, 7413, 7749, 9531, 9963, 14473, 15309, 22239, 23247, 28593, 29889, 43419, 66717, 69741, 85779, 89667, 101311, 130257, 200151, 209223, 257337, 303933, 390771, 600453, 627669, 772011, 911799, 1172313, 1801359, 2735397, 3516939, 5404077, 8206191, 10550817, 24618573, 31652451, 73855719, 221567157]

約数ペア:

[(1, 221567157), (3, 73855719), (7, 31652451), (9, 24618573), (21, 10550817), (27, 8206191), (41, 5404077), (63, 3516939), (81, 2735397), (123, 1801359), (189, 1172313), (243, 911799), (287, 772011), (353, 627669), (369, 600453), (567, 390771), (729, 303933), (861, 257337), (1059, 209223), (1107, 200151), (1701, 130257), (2187, 101311), (2471, 89667), (2583, 85779), (3177, 69741), (3321, 66717), (5103, 43419), (7413, 29889), (7749, 28593), (9531, 23247), (9963, 22239), (14473, 15309)]