291395720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2557}}^1$

素因数の和:2623

約数の個数: 128

約数和(自身を含む): 839842560

約数和(自身を除く): 548446840

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 37, 40, 44, 55, 56, 70, 74, 77, 88, 110, 140, 148, 154, 185, 220, 259, 280, 296, 308, 370, 385, 407, 440, 518, 616, 740, 770, 814, 1036, 1295, 1480, 1540, 1628, 2035, 2072, 2557, 2590, 2849, 3080, 3256, 4070, 5114, 5180, 5698, 8140, 10228, 10360, 11396, 12785, 14245, 16280, 17899, 20456, 22792, 25570, 28127, 28490, 35798, 51140, 56254, 56980, 71596, 89495, 94609, 102280, 112508, 113960, 140635, 143192, 178990, 189218, 196889, 225016, 281270, 357980, 378436, 393778, 473045, 562540, 662263, 715960, 756872, 787556, 946090, 984445, 1040699, 1125080, 1324526, 1575112, 1892180, 1968890, 2081398, 2649052, 3311315, 3784360, 3937780, 4162796, 5203495, 5298104, 6622630, 7284893, 7875560, 8325592, 10406990, 13245260, 14569786, 20813980, 26490520, 29139572, 36424465, 41627960, 58279144, 72848930, 145697860, 291395720]

約数ペア:

[(1, 291395720), (2, 145697860), (4, 72848930), (5, 58279144), (7, 41627960), (8, 36424465), (10, 29139572), (11, 26490520), (14, 20813980), (20, 14569786), (22, 13245260), (28, 10406990), (35, 8325592), (37, 7875560), (40, 7284893), (44, 6622630), (55, 5298104), (56, 5203495), (70, 4162796), (74, 3937780), (77, 3784360), (88, 3311315), (110, 2649052), (140, 2081398), (148, 1968890), (154, 1892180), (185, 1575112), (220, 1324526), (259, 1125080), (280, 1040699), (296, 984445), (308, 946090), (370, 787556), (385, 756872), (407, 715960), (440, 662263), (518, 562540), (616, 473045), (740, 393778), (770, 378436), (814, 357980), (1036, 281270), (1295, 225016), (1480, 196889), (1540, 189218), (1628, 178990), (2035, 143192), (2072, 140635), (2557, 113960), (2590, 112508), (2849, 102280), (3080, 94609), (3256, 89495), (4070, 71596), (5114, 56980), (5180, 56254), (5698, 51140), (8140, 35798), (10228, 28490), (10360, 28127), (11396, 25570), (12785, 22792), (14245, 20456), (16280, 17899)]