721398916

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{547}}^1$

素因数の和:681

約数の個数: 96

約数和(自身を含む): 1585955840

約数和(自身を除く): 864556924

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 67, 74, 76, 133, 134, 148, 259, 266, 268, 469, 518, 532, 547, 703, 938, 1036, 1094, 1273, 1406, 1876, 2188, 2479, 2546, 2812, 3829, 4921, 4958, 5092, 7658, 8911, 9842, 9916, 10393, 15316, 17353, 17822, 19684, 20239, 20786, 34706, 35644, 36649, 40478, 41572, 47101, 69412, 72751, 73298, 80956, 94202, 141673, 145502, 146596, 188404, 256543, 283346, 291004, 329707, 384541, 513086, 566692, 659414, 696331, 769082, 1026172, 1318828, 1356013, 1392662, 1538164, 2691787, 2712026, 2785324, 4874317, 5383574, 5424052, 9492091, 9748634, 10767148, 18984182, 19497268, 25764247, 37968364, 51528494, 103056988, 180349729, 360699458, 721398916]

約数ペア:

[(1, 721398916), (2, 360699458), (4, 180349729), (7, 103056988), (14, 51528494), (19, 37968364), (28, 25764247), (37, 19497268), (38, 18984182), (67, 10767148), (74, 9748634), (76, 9492091), (133, 5424052), (134, 5383574), (148, 4874317), (259, 2785324), (266, 2712026), (268, 2691787), (469, 1538164), (518, 1392662), (532, 1356013), (547, 1318828), (703, 1026172), (938, 769082), (1036, 696331), (1094, 659414), (1273, 566692), (1406, 513086), (1876, 384541), (2188, 329707), (2479, 291004), (2546, 283346), (2812, 256543), (3829, 188404), (4921, 146596), (4958, 145502), (5092, 141673), (7658, 94202), (8911, 80956), (9842, 73298), (9916, 72751), (10393, 69412), (15316, 47101), (17353, 41572), (17822, 40478), (19684, 36649), (20239, 35644), (20786, 34706)]