20804977900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{5779}}^1$

素因数の和:5976

約数の個数: 144

約数和(自身を含む): 53381305600

約数和(自身を除く): 32576327700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 37, 50, 70, 74, 100, 139, 140, 148, 175, 185, 259, 278, 350, 370, 518, 556, 695, 700, 740, 925, 973, 1036, 1295, 1390, 1850, 1946, 2590, 2780, 3475, 3700, 3892, 4865, 5143, 5180, 5779, 6475, 6950, 9730, 10286, 11558, 12950, 13900, 19460, 20572, 23116, 24325, 25715, 25900, 28895, 36001, 40453, 48650, 51430, 57790, 72002, 80906, 97300, 102860, 115580, 128575, 144004, 144475, 161812, 180005, 202265, 213823, 257150, 288950, 360010, 404530, 427646, 514300, 577900, 720020, 803281, 809060, 855292, 900025, 1011325, 1069115, 1496761, 1606562, 1800050, 2022650, 2138230, 2993522, 3213124, 3600100, 4016405, 4045300, 4276460, 5345575, 5622967, 5987044, 7483805, 8032810, 10691150, 11245934, 14967610, 16065620, 20082025, 21382300, 22491868, 28114835, 29721397, 29935220, 37419025, 40164050, 56229670, 59442794, 74838050, 80328100, 112459340, 118885588, 140574175, 148606985, 149676100, 208049779, 281148350, 297213970, 416099558, 562296700, 594427940, 743034925, 832199116, 1040248895, 1486069850, 2080497790, 2972139700, 4160995580, 5201244475, 10402488950, 20804977900]

約数ペア:

[(1, 20804977900), (2, 10402488950), (4, 5201244475), (5, 4160995580), (7, 2972139700), (10, 2080497790), (14, 1486069850), (20, 1040248895), (25, 832199116), (28, 743034925), (35, 594427940), (37, 562296700), (50, 416099558), (70, 297213970), (74, 281148350), (100, 208049779), (139, 149676100), (140, 148606985), (148, 140574175), (175, 118885588), (185, 112459340), (259, 80328100), (278, 74838050), (350, 59442794), (370, 56229670), (518, 40164050), (556, 37419025), (695, 29935220), (700, 29721397), (740, 28114835), (925, 22491868), (973, 21382300), (1036, 20082025), (1295, 16065620), (1390, 14967610), (1850, 11245934), (1946, 10691150), (2590, 8032810), (2780, 7483805), (3475, 5987044), (3700, 5622967), (3892, 5345575), (4865, 4276460), (5143, 4045300), (5180, 4016405), (5779, 3600100), (6475, 3213124), (6950, 2993522), (9730, 2138230), (10286, 2022650), (11558, 1800050), (12950, 1606562), (13900, 1496761), (19460, 1069115), (20572, 1011325), (23116, 900025), (24325, 855292), (25715, 809060), (25900, 803281), (28895, 720020), (36001, 577900), (40453, 514300), (48650, 427646), (51430, 404530), (57790, 360010), (72002, 288950), (80906, 257150), (97300, 213823), (102860, 202265), (115580, 180005), (128575, 161812), (144004, 144475)]