78856960

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{677}}^1$

素因数の和:718

約数の個数: 144

約数和(自身を含む): 232819776

約数和(自身を除く): 153962816

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, 256, 260, 280, 320, 364, 416, 448, 455, 520, 560, 640, 677, 728, 832, 896, 910, 1040, 1120, 1280, 1354, 1456, 1664, 1792, 1820, 2080, 2240, 2708, 2912, 3328, 3385, 3640, 4160, 4480, 4739, 5416, 5824, 6770, 7280, 8320, 8801, 8960, 9478, 10832, 11648, 13540, 14560, 16640, 17602, 18956, 21664, 23296, 23695, 27080, 29120, 35204, 37912, 43328, 44005, 47390, 54160, 58240, 61607, 70408, 75824, 86656, 88010, 94780, 108320, 116480, 123214, 140816, 151648, 173312, 176020, 189560, 216640, 246428, 281632, 303296, 308035, 352040, 379120, 433280, 492856, 563264, 606592, 616070, 704080, 758240, 866560, 985712, 1126528, 1213184, 1232140, 1408160, 1516480, 1971424, 2253056, 2464280, 2816320, 3032960, 3942848, 4928560, 5632640, 6065920, 7885696, 9857120, 11265280, 15771392, 19714240, 39428480, 78856960]

約数ペア:

[(1, 78856960), (2, 39428480), (4, 19714240), (5, 15771392), (7, 11265280), (8, 9857120), (10, 7885696), (13, 6065920), (14, 5632640), (16, 4928560), (20, 3942848), (26, 3032960), (28, 2816320), (32, 2464280), (35, 2253056), (40, 1971424), (52, 1516480), (56, 1408160), (64, 1232140), (65, 1213184), (70, 1126528), (80, 985712), (91, 866560), (104, 758240), (112, 704080), (128, 616070), (130, 606592), (140, 563264), (160, 492856), (182, 433280), (208, 379120), (224, 352040), (256, 308035), (260, 303296), (280, 281632), (320, 246428), (364, 216640), (416, 189560), (448, 176020), (455, 173312), (520, 151648), (560, 140816), (640, 123214), (677, 116480), (728, 108320), (832, 94780), (896, 88010), (910, 86656), (1040, 75824), (1120, 70408), (1280, 61607), (1354, 58240), (1456, 54160), (1664, 47390), (1792, 44005), (1820, 43328), (2080, 37912), (2240, 35204), (2708, 29120), (2912, 27080), (3328, 23695), (3385, 23296), (3640, 21664), (4160, 18956), (4480, 17602), (4739, 16640), (5416, 14560), (5824, 13540), (6770, 11648), (7280, 10832), (8320, 9478), (8801, 8960)]