81645816

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:365

約数の個数: 128

約数和(自身を含む): 245698560

約数和(自身を除く): 164052744

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 42, 56, 61, 62, 84, 93, 122, 124, 168, 183, 186, 217, 244, 248, 257, 366, 372, 427, 434, 488, 514, 651, 732, 744, 771, 854, 868, 1028, 1281, 1302, 1464, 1542, 1708, 1736, 1799, 1891, 2056, 2562, 2604, 3084, 3416, 3598, 3782, 5124, 5208, 5397, 5673, 6168, 7196, 7564, 7967, 10248, 10794, 11346, 13237, 14392, 15128, 15677, 15934, 21588, 22692, 23901, 26474, 31354, 31868, 39711, 43176, 45384, 47031, 47802, 52948, 55769, 62708, 63736, 79422, 94062, 95604, 105896, 109739, 111538, 125416, 158844, 167307, 188124, 191208, 219478, 223076, 317688, 329217, 334614, 376248, 438956, 446152, 485987, 658434, 669228, 877912, 971974, 1316868, 1338456, 1457961, 1943948, 2633736, 2915922, 3401909, 3887896, 5831844, 6803818, 10205727, 11663688, 13607636, 20411454, 27215272, 40822908, 81645816]

約数ペア:

[(1, 81645816), (2, 40822908), (3, 27215272), (4, 20411454), (6, 13607636), (7, 11663688), (8, 10205727), (12, 6803818), (14, 5831844), (21, 3887896), (24, 3401909), (28, 2915922), (31, 2633736), (42, 1943948), (56, 1457961), (61, 1338456), (62, 1316868), (84, 971974), (93, 877912), (122, 669228), (124, 658434), (168, 485987), (183, 446152), (186, 438956), (217, 376248), (244, 334614), (248, 329217), (257, 317688), (366, 223076), (372, 219478), (427, 191208), (434, 188124), (488, 167307), (514, 158844), (651, 125416), (732, 111538), (744, 109739), (771, 105896), (854, 95604), (868, 94062), (1028, 79422), (1281, 63736), (1302, 62708), (1464, 55769), (1542, 52948), (1708, 47802), (1736, 47031), (1799, 45384), (1891, 43176), (2056, 39711), (2562, 31868), (2604, 31354), (3084, 26474), (3416, 23901), (3598, 22692), (3782, 21588), (5124, 15934), (5208, 15677), (5397, 15128), (5673, 14392), (6168, 13237), (7196, 11346), (7564, 10794), (7967, 10248)]