28348880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 160

約数和(自身を含む): 82280448

約数和(自身を除く): 53931568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 31, 35, 40, 46, 56, 62, 70, 71, 80, 92, 112, 115, 124, 140, 142, 155, 161, 184, 217, 230, 248, 280, 284, 310, 322, 355, 368, 434, 460, 496, 497, 560, 568, 620, 644, 710, 713, 805, 868, 920, 994, 1085, 1136, 1240, 1288, 1420, 1426, 1610, 1633, 1736, 1840, 1988, 2170, 2201, 2480, 2485, 2576, 2840, 2852, 3220, 3266, 3472, 3565, 3976, 4340, 4402, 4970, 4991, 5680, 5704, 6440, 6532, 7130, 7952, 8165, 8680, 8804, 9940, 9982, 11005, 11408, 11431, 12880, 13064, 14260, 15407, 16330, 17360, 17608, 19880, 19964, 22010, 22862, 24955, 26128, 28520, 30814, 32660, 35216, 39760, 39928, 44020, 45724, 49910, 50623, 57040, 57155, 61628, 65320, 77035, 79856, 88040, 91448, 99820, 101246, 114310, 123256, 130640, 154070, 176080, 182896, 199640, 202492, 228620, 246512, 253115, 308140, 354361, 399280, 404984, 457240, 506230, 616280, 708722, 809968, 914480, 1012460, 1232560, 1417444, 1771805, 2024920, 2834888, 3543610, 4049840, 5669776, 7087220, 14174440, 28348880]

約数ペア:

[(1, 28348880), (2, 14174440), (4, 7087220), (5, 5669776), (7, 4049840), (8, 3543610), (10, 2834888), (14, 2024920), (16, 1771805), (20, 1417444), (23, 1232560), (28, 1012460), (31, 914480), (35, 809968), (40, 708722), (46, 616280), (56, 506230), (62, 457240), (70, 404984), (71, 399280), (80, 354361), (92, 308140), (112, 253115), (115, 246512), (124, 228620), (140, 202492), (142, 199640), (155, 182896), (161, 176080), (184, 154070), (217, 130640), (230, 123256), (248, 114310), (280, 101246), (284, 99820), (310, 91448), (322, 88040), (355, 79856), (368, 77035), (434, 65320), (460, 61628), (496, 57155), (497, 57040), (560, 50623), (568, 49910), (620, 45724), (644, 44020), (710, 39928), (713, 39760), (805, 35216), (868, 32660), (920, 30814), (994, 28520), (1085, 26128), (1136, 24955), (1240, 22862), (1288, 22010), (1420, 19964), (1426, 19880), (1610, 17608), (1633, 17360), (1736, 16330), (1840, 15407), (1988, 14260), (2170, 13064), (2201, 12880), (2480, 11431), (2485, 11408), (2576, 11005), (2840, 9982), (2852, 9940), (3220, 8804), (3266, 8680), (3472, 8165), (3565, 7952), (3976, 7130), (4340, 6532), (4402, 6440), (4970, 5704), (4991, 5680)]