28714257

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 80

約数和(自身を含む): 52527552

約数和(自身を除く): 23813295

約数列:

[1, 3, 9, 11, 13, 27, 33, 37, 39, 67, 81, 99, 111, 117, 143, 201, 297, 333, 351, 407, 429, 481, 603, 737, 871, 891, 999, 1053, 1221, 1287, 1443, 1809, 2211, 2479, 2613, 2997, 3663, 3861, 4329, 5291, 5427, 6633, 7437, 7839, 9581, 10989, 11583, 12987, 15873, 19899, 22311, 23517, 27269, 28743, 32227, 32967, 38961, 47619, 59697, 66933, 70551, 81807, 86229, 96681, 142857, 200799, 245421, 258687, 290043, 354497, 428571, 736263, 776061, 870129, 1063491, 2208789, 2610387, 3190473, 9571419, 28714257]

約数ペア:

[(1, 28714257), (3, 9571419), (9, 3190473), (11, 2610387), (13, 2208789), (27, 1063491), (33, 870129), (37, 776061), (39, 736263), (67, 428571), (81, 354497), (99, 290043), (111, 258687), (117, 245421), (143, 200799), (201, 142857), (297, 96681), (333, 86229), (351, 81807), (407, 70551), (429, 66933), (481, 59697), (603, 47619), (737, 38961), (871, 32967), (891, 32227), (999, 28743), (1053, 27269), (1221, 23517), (1287, 22311), (1443, 19899), (1809, 15873), (2211, 12987), (2479, 11583), (2613, 10989), (2997, 9581), (3663, 7839), (3861, 7437), (4329, 6633), (5291, 5427)]