280280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:49

約数の個数: 96

約数和(自身を含む): 861840

約数和(自身を除く): 581560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 49, 52, 55, 56, 65, 70, 77, 88, 91, 98, 104, 110, 130, 140, 143, 154, 182, 196, 220, 245, 260, 280, 286, 308, 364, 385, 392, 440, 455, 490, 520, 539, 572, 616, 637, 715, 728, 770, 910, 980, 1001, 1078, 1144, 1274, 1430, 1540, 1820, 1960, 2002, 2156, 2548, 2695, 2860, 3080, 3185, 3640, 4004, 4312, 5005, 5096, 5390, 5720, 6370, 7007, 8008, 10010, 10780, 12740, 14014, 20020, 21560, 25480, 28028, 35035, 40040, 56056, 70070, 140140, 280280]

約数ペア:

[(1, 280280), (2, 140140), (4, 70070), (5, 56056), (7, 40040), (8, 35035), (10, 28028), (11, 25480), (13, 21560), (14, 20020), (20, 14014), (22, 12740), (26, 10780), (28, 10010), (35, 8008), (40, 7007), (44, 6370), (49, 5720), (52, 5390), (55, 5096), (56, 5005), (65, 4312), (70, 4004), (77, 3640), (88, 3185), (91, 3080), (98, 2860), (104, 2695), (110, 2548), (130, 2156), (140, 2002), (143, 1960), (154, 1820), (182, 1540), (196, 1430), (220, 1274), (245, 1144), (260, 1078), (280, 1001), (286, 980), (308, 910), (364, 770), (385, 728), (392, 715), (440, 637), (455, 616), (490, 572), (520, 539)]