81720716

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 187536384

約数和(自身を除く): 105815668

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 71, 74, 77, 101, 142, 148, 154, 202, 259, 284, 308, 404, 407, 497, 518, 707, 781, 814, 994, 1036, 1111, 1414, 1562, 1628, 1988, 2222, 2627, 2828, 2849, 3124, 3737, 4444, 5254, 5467, 5698, 7171, 7474, 7777, 10508, 10934, 11396, 14342, 14948, 15554, 18389, 21868, 26159, 28684, 28897, 31108, 36778, 41107, 50197, 52318, 57794, 73556, 78881, 82214, 100394, 104636, 115588, 157762, 164428, 200788, 202279, 265327, 287749, 315524, 404558, 530654, 552167, 575498, 809116, 1061308, 1104334, 1150996, 1857289, 2208668, 2918597, 3714578, 5837194, 7429156, 11674388, 20430179, 40860358, 81720716]

約数ペア:

[(1, 81720716), (2, 40860358), (4, 20430179), (7, 11674388), (11, 7429156), (14, 5837194), (22, 3714578), (28, 2918597), (37, 2208668), (44, 1857289), (71, 1150996), (74, 1104334), (77, 1061308), (101, 809116), (142, 575498), (148, 552167), (154, 530654), (202, 404558), (259, 315524), (284, 287749), (308, 265327), (404, 202279), (407, 200788), (497, 164428), (518, 157762), (707, 115588), (781, 104636), (814, 100394), (994, 82214), (1036, 78881), (1111, 73556), (1414, 57794), (1562, 52318), (1628, 50197), (1988, 41107), (2222, 36778), (2627, 31108), (2828, 28897), (2849, 28684), (3124, 26159), (3737, 21868), (4444, 18389), (5254, 15554), (5467, 14948), (5698, 14342), (7171, 11396), (7474, 10934), (7777, 10508)]