28071680

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1$

素因数の和:282

約数の個数: 144

約数和(自身を含む): 83100864

約数和(自身を除く): 55029184

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 241, 256, 260, 280, 320, 364, 416, 448, 455, 482, 520, 560, 640, 728, 832, 896, 910, 964, 1040, 1120, 1205, 1280, 1456, 1664, 1687, 1792, 1820, 1928, 2080, 2240, 2410, 2912, 3133, 3328, 3374, 3640, 3856, 4160, 4480, 4820, 5824, 6266, 6748, 7280, 7712, 8320, 8435, 8960, 9640, 11648, 12532, 13496, 14560, 15424, 15665, 16640, 16870, 19280, 21931, 23296, 25064, 26992, 29120, 30848, 31330, 33740, 38560, 43862, 50128, 53984, 58240, 61696, 62660, 67480, 77120, 87724, 100256, 107968, 109655, 116480, 125320, 134960, 154240, 175448, 200512, 215936, 219310, 250640, 269920, 308480, 350896, 401024, 431872, 438620, 501280, 539840, 701792, 802048, 877240, 1002560, 1079680, 1403584, 1754480, 2005120, 2159360, 2807168, 3508960, 4010240, 5614336, 7017920, 14035840, 28071680]

約数ペア:

[(1, 28071680), (2, 14035840), (4, 7017920), (5, 5614336), (7, 4010240), (8, 3508960), (10, 2807168), (13, 2159360), (14, 2005120), (16, 1754480), (20, 1403584), (26, 1079680), (28, 1002560), (32, 877240), (35, 802048), (40, 701792), (52, 539840), (56, 501280), (64, 438620), (65, 431872), (70, 401024), (80, 350896), (91, 308480), (104, 269920), (112, 250640), (128, 219310), (130, 215936), (140, 200512), (160, 175448), (182, 154240), (208, 134960), (224, 125320), (241, 116480), (256, 109655), (260, 107968), (280, 100256), (320, 87724), (364, 77120), (416, 67480), (448, 62660), (455, 61696), (482, 58240), (520, 53984), (560, 50128), (640, 43862), (728, 38560), (832, 33740), (896, 31330), (910, 30848), (964, 29120), (1040, 26992), (1120, 25064), (1205, 23296), (1280, 21931), (1456, 19280), (1664, 16870), (1687, 16640), (1792, 15665), (1820, 15424), (1928, 14560), (2080, 13496), (2240, 12532), (2410, 11648), (2912, 9640), (3133, 8960), (3328, 8435), (3374, 8320), (3640, 7712), (3856, 7280), (4160, 6748), (4480, 6266), (4820, 5824)]