81711784

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:455

約数の個数: 96

約数和(自身を含む): 199180800

約数和(自身を除く): 117469016

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 31, 44, 56, 62, 77, 88, 121, 124, 154, 217, 242, 248, 308, 341, 389, 434, 484, 616, 682, 778, 847, 868, 968, 1364, 1556, 1694, 1736, 2387, 2723, 2728, 3112, 3388, 3751, 4279, 4774, 5446, 6776, 7502, 8558, 9548, 10892, 12059, 15004, 17116, 19096, 21784, 24118, 26257, 29953, 30008, 34232, 47069, 48236, 52514, 59906, 84413, 94138, 96472, 105028, 119812, 132649, 168826, 188276, 210056, 239624, 265298, 329483, 337652, 376552, 530596, 658966, 675304, 928543, 1061192, 1317932, 1459139, 1857086, 2635864, 2918278, 3714172, 5836556, 7428344, 10213973, 11673112, 20427946, 40855892, 81711784]

約数ペア:

[(1, 81711784), (2, 40855892), (4, 20427946), (7, 11673112), (8, 10213973), (11, 7428344), (14, 5836556), (22, 3714172), (28, 2918278), (31, 2635864), (44, 1857086), (56, 1459139), (62, 1317932), (77, 1061192), (88, 928543), (121, 675304), (124, 658966), (154, 530596), (217, 376552), (242, 337652), (248, 329483), (308, 265298), (341, 239624), (389, 210056), (434, 188276), (484, 168826), (616, 132649), (682, 119812), (778, 105028), (847, 96472), (868, 94138), (968, 84413), (1364, 59906), (1556, 52514), (1694, 48236), (1736, 47069), (2387, 34232), (2723, 30008), (2728, 29953), (3112, 26257), (3388, 24118), (3751, 21784), (4279, 19096), (4774, 17116), (5446, 15004), (6776, 12059), (7502, 10892), (8558, 9548)]