81728864

素因数分解:

$2^5\times 7^2\times {\mathrm{47}}^1\times {\mathrm{1109}}^1$

素因数の和:1180

約数の個数: 72

約数和(自身を含む): 191328480

約数和(自身を除く): 109599616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 49, 56, 94, 98, 112, 188, 196, 224, 329, 376, 392, 658, 752, 784, 1109, 1316, 1504, 1568, 2218, 2303, 2632, 4436, 4606, 5264, 7763, 8872, 9212, 10528, 15526, 17744, 18424, 31052, 35488, 36848, 52123, 54341, 62104, 73696, 104246, 108682, 124208, 208492, 217364, 248416, 364861, 416984, 434728, 729722, 833968, 869456, 1459444, 1667936, 1738912, 2554027, 2918888, 5108054, 5837776, 10216108, 11675552, 20432216, 40864432, 81728864]

約数ペア:

[(1, 81728864), (2, 40864432), (4, 20432216), (7, 11675552), (8, 10216108), (14, 5837776), (16, 5108054), (28, 2918888), (32, 2554027), (47, 1738912), (49, 1667936), (56, 1459444), (94, 869456), (98, 833968), (112, 729722), (188, 434728), (196, 416984), (224, 364861), (329, 248416), (376, 217364), (392, 208492), (658, 124208), (752, 108682), (784, 104246), (1109, 73696), (1316, 62104), (1504, 54341), (1568, 52123), (2218, 36848), (2303, 35488), (2632, 31052), (4436, 18424), (4606, 17744), (5264, 15526), (7763, 10528), (8872, 9212)]