28404080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:438

約数の個数: 80

約数和(自身を含む): 70709760

約数和(自身を除く): 42305680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 43, 46, 80, 86, 92, 115, 172, 184, 215, 230, 344, 359, 368, 430, 460, 688, 718, 860, 920, 989, 1436, 1720, 1795, 1840, 1978, 2872, 3440, 3590, 3956, 4945, 5744, 7180, 7912, 8257, 9890, 14360, 15437, 15824, 16514, 19780, 28720, 30874, 33028, 39560, 41285, 61748, 66056, 77185, 79120, 82570, 123496, 132112, 154370, 165140, 246992, 308740, 330280, 355051, 617480, 660560, 710102, 1234960, 1420204, 1775255, 2840408, 3550510, 5680816, 7101020, 14202040, 28404080]

約数ペア:

[(1, 28404080), (2, 14202040), (4, 7101020), (5, 5680816), (8, 3550510), (10, 2840408), (16, 1775255), (20, 1420204), (23, 1234960), (40, 710102), (43, 660560), (46, 617480), (80, 355051), (86, 330280), (92, 308740), (115, 246992), (172, 165140), (184, 154370), (215, 132112), (230, 123496), (344, 82570), (359, 79120), (368, 77185), (430, 66056), (460, 61748), (688, 41285), (718, 39560), (860, 33028), (920, 30874), (989, 28720), (1436, 19780), (1720, 16514), (1795, 15824), (1840, 15437), (1978, 14360), (2872, 9890), (3440, 8257), (3590, 7912), (3956, 7180), (4945, 5744)]