256895600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:547

約数の個数: 120

約数和(自身を含む): 671623680

約数和(自身を除く): 414728080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 127, 130, 200, 208, 254, 260, 325, 389, 400, 508, 520, 635, 650, 778, 1016, 1040, 1270, 1300, 1556, 1651, 1945, 2032, 2540, 2600, 3112, 3175, 3302, 3890, 5057, 5080, 5200, 6224, 6350, 6604, 7780, 8255, 9725, 10114, 10160, 12700, 13208, 15560, 16510, 19450, 20228, 25285, 25400, 26416, 31120, 33020, 38900, 40456, 41275, 49403, 50570, 50800, 66040, 77800, 80912, 82550, 98806, 101140, 126425, 132080, 155600, 165100, 197612, 202280, 247015, 252850, 330200, 395224, 404560, 494030, 505700, 642239, 660400, 790448, 988060, 1011400, 1235075, 1284478, 1976120, 2022800, 2470150, 2568956, 3211195, 3952240, 4940300, 5137912, 6422390, 9880600, 10275824, 12844780, 16055975, 19761200, 25689560, 32111950, 51379120, 64223900, 128447800, 256895600]

約数ペア:

[(1, 256895600), (2, 128447800), (4, 64223900), (5, 51379120), (8, 32111950), (10, 25689560), (13, 19761200), (16, 16055975), (20, 12844780), (25, 10275824), (26, 9880600), (40, 6422390), (50, 5137912), (52, 4940300), (65, 3952240), (80, 3211195), (100, 2568956), (104, 2470150), (127, 2022800), (130, 1976120), (200, 1284478), (208, 1235075), (254, 1011400), (260, 988060), (325, 790448), (389, 660400), (400, 642239), (508, 505700), (520, 494030), (635, 404560), (650, 395224), (778, 330200), (1016, 252850), (1040, 247015), (1270, 202280), (1300, 197612), (1556, 165100), (1651, 155600), (1945, 132080), (2032, 126425), (2540, 101140), (2600, 98806), (3112, 82550), (3175, 80912), (3302, 77800), (3890, 66040), (5057, 50800), (5080, 50570), (5200, 49403), (6224, 41275), (6350, 40456), (6604, 38900), (7780, 33020), (8255, 31120), (9725, 26416), (10114, 25400), (10160, 25285), (12700, 20228), (13208, 19450), (15560, 16510)]