281651640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{353}}^1$

素因数の和:537

約数の個数: 128

約数和(自身を含む): 869140800

約数和(自身を除く): 587489160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 109, 120, 122, 183, 218, 244, 305, 327, 353, 366, 436, 488, 545, 610, 654, 706, 732, 872, 915, 1059, 1090, 1220, 1308, 1412, 1464, 1635, 1765, 1830, 2118, 2180, 2440, 2616, 2824, 3270, 3530, 3660, 4236, 4360, 5295, 6540, 6649, 7060, 7320, 8472, 10590, 13080, 13298, 14120, 19947, 21180, 21533, 26596, 33245, 38477, 39894, 42360, 43066, 53192, 64599, 66490, 76954, 79788, 86132, 99735, 107665, 115431, 129198, 132980, 153908, 159576, 172264, 192385, 199470, 215330, 230862, 258396, 265960, 307816, 322995, 384770, 398940, 430660, 461724, 516792, 577155, 645990, 769540, 797880, 861320, 923448, 1154310, 1291980, 1539080, 2308620, 2347097, 2583960, 4617240, 4694194, 7041291, 9388388, 11735485, 14082582, 18776776, 23470970, 28165164, 35206455, 46941940, 56330328, 70412910, 93883880, 140825820, 281651640]

約数ペア:

[(1, 281651640), (2, 140825820), (3, 93883880), (4, 70412910), (5, 56330328), (6, 46941940), (8, 35206455), (10, 28165164), (12, 23470970), (15, 18776776), (20, 14082582), (24, 11735485), (30, 9388388), (40, 7041291), (60, 4694194), (61, 4617240), (109, 2583960), (120, 2347097), (122, 2308620), (183, 1539080), (218, 1291980), (244, 1154310), (305, 923448), (327, 861320), (353, 797880), (366, 769540), (436, 645990), (488, 577155), (545, 516792), (610, 461724), (654, 430660), (706, 398940), (732, 384770), (872, 322995), (915, 307816), (1059, 265960), (1090, 258396), (1220, 230862), (1308, 215330), (1412, 199470), (1464, 192385), (1635, 172264), (1765, 159576), (1830, 153908), (2118, 132980), (2180, 129198), (2440, 115431), (2616, 107665), (2824, 99735), (3270, 86132), (3530, 79788), (3660, 76954), (4236, 66490), (4360, 64599), (5295, 53192), (6540, 43066), (6649, 42360), (7060, 39894), (7320, 38477), (8472, 33245), (10590, 26596), (13080, 21533), (13298, 21180), (14120, 19947)]